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Commit | Line | Data |
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0996517c HV |
1 | /* |
2 | V4L2 controls framework implementation. | |
3 | ||
4 | Copyright (C) 2010 Hans Verkuil <hverkuil@xs4all.nl> | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | #include <linux/ctype.h> | |
2b80163c | 22 | #include <linux/slab.h> |
35a24636 | 23 | #include <linux/export.h> |
0996517c HV |
24 | #include <media/v4l2-ioctl.h> |
25 | #include <media/v4l2-device.h> | |
26 | #include <media/v4l2-ctrls.h> | |
6e239399 | 27 | #include <media/v4l2-event.h> |
0996517c HV |
28 | #include <media/v4l2-dev.h> |
29 | ||
ddac5c10 HV |
30 | #define has_op(master, op) \ |
31 | (master->ops && master->ops->op) | |
54c911eb | 32 | #define call_op(master, op) \ |
ddac5c10 | 33 | (has_op(master, op) ? master->ops->op(master) : 0) |
54c911eb | 34 | |
0996517c | 35 | /* Internal temporary helper struct, one for each v4l2_ext_control */ |
eb5b16ef HV |
36 | struct v4l2_ctrl_helper { |
37 | /* Pointer to the control reference of the master control */ | |
38 | struct v4l2_ctrl_ref *mref; | |
0996517c HV |
39 | /* The control corresponding to the v4l2_ext_control ID field. */ |
40 | struct v4l2_ctrl *ctrl; | |
eb5b16ef HV |
41 | /* v4l2_ext_control index of the next control belonging to the |
42 | same cluster, or 0 if there isn't any. */ | |
43 | u32 next; | |
0996517c HV |
44 | }; |
45 | ||
72d877ca | 46 | /* Small helper function to determine if the autocluster is set to manual |
88365105 | 47 | mode. */ |
72d877ca HV |
48 | static bool is_cur_manual(const struct v4l2_ctrl *master) |
49 | { | |
50 | return master->is_auto && master->cur.val == master->manual_mode_value; | |
51 | } | |
52 | ||
53 | /* Same as above, but this checks the against the new value instead of the | |
54 | current value. */ | |
55 | static bool is_new_manual(const struct v4l2_ctrl *master) | |
56 | { | |
57 | return master->is_auto && master->val == master->manual_mode_value; | |
58 | } | |
59 | ||
0996517c HV |
60 | /* Returns NULL or a character pointer array containing the menu for |
61 | the given control ID. The pointer array ends with a NULL pointer. | |
62 | An empty string signifies a menu entry that is invalid. This allows | |
63 | drivers to disable certain options if it is not supported. */ | |
513521ea | 64 | const char * const *v4l2_ctrl_get_menu(u32 id) |
0996517c | 65 | { |
513521ea | 66 | static const char * const mpeg_audio_sampling_freq[] = { |
0996517c HV |
67 | "44.1 kHz", |
68 | "48 kHz", | |
69 | "32 kHz", | |
70 | NULL | |
71 | }; | |
513521ea | 72 | static const char * const mpeg_audio_encoding[] = { |
0996517c HV |
73 | "MPEG-1/2 Layer I", |
74 | "MPEG-1/2 Layer II", | |
75 | "MPEG-1/2 Layer III", | |
76 | "MPEG-2/4 AAC", | |
77 | "AC-3", | |
78 | NULL | |
79 | }; | |
513521ea | 80 | static const char * const mpeg_audio_l1_bitrate[] = { |
0996517c HV |
81 | "32 kbps", |
82 | "64 kbps", | |
83 | "96 kbps", | |
84 | "128 kbps", | |
85 | "160 kbps", | |
86 | "192 kbps", | |
87 | "224 kbps", | |
88 | "256 kbps", | |
89 | "288 kbps", | |
90 | "320 kbps", | |
91 | "352 kbps", | |
92 | "384 kbps", | |
93 | "416 kbps", | |
94 | "448 kbps", | |
95 | NULL | |
96 | }; | |
513521ea | 97 | static const char * const mpeg_audio_l2_bitrate[] = { |
0996517c HV |
98 | "32 kbps", |
99 | "48 kbps", | |
100 | "56 kbps", | |
101 | "64 kbps", | |
102 | "80 kbps", | |
103 | "96 kbps", | |
104 | "112 kbps", | |
105 | "128 kbps", | |
106 | "160 kbps", | |
107 | "192 kbps", | |
108 | "224 kbps", | |
109 | "256 kbps", | |
110 | "320 kbps", | |
111 | "384 kbps", | |
112 | NULL | |
113 | }; | |
513521ea | 114 | static const char * const mpeg_audio_l3_bitrate[] = { |
0996517c HV |
115 | "32 kbps", |
116 | "40 kbps", | |
117 | "48 kbps", | |
118 | "56 kbps", | |
119 | "64 kbps", | |
120 | "80 kbps", | |
121 | "96 kbps", | |
122 | "112 kbps", | |
123 | "128 kbps", | |
124 | "160 kbps", | |
125 | "192 kbps", | |
126 | "224 kbps", | |
127 | "256 kbps", | |
128 | "320 kbps", | |
129 | NULL | |
130 | }; | |
513521ea | 131 | static const char * const mpeg_audio_ac3_bitrate[] = { |
0996517c HV |
132 | "32 kbps", |
133 | "40 kbps", | |
134 | "48 kbps", | |
135 | "56 kbps", | |
136 | "64 kbps", | |
137 | "80 kbps", | |
138 | "96 kbps", | |
139 | "112 kbps", | |
140 | "128 kbps", | |
141 | "160 kbps", | |
142 | "192 kbps", | |
143 | "224 kbps", | |
144 | "256 kbps", | |
145 | "320 kbps", | |
146 | "384 kbps", | |
147 | "448 kbps", | |
148 | "512 kbps", | |
149 | "576 kbps", | |
150 | "640 kbps", | |
151 | NULL | |
152 | }; | |
513521ea | 153 | static const char * const mpeg_audio_mode[] = { |
0996517c HV |
154 | "Stereo", |
155 | "Joint Stereo", | |
156 | "Dual", | |
157 | "Mono", | |
158 | NULL | |
159 | }; | |
513521ea | 160 | static const char * const mpeg_audio_mode_extension[] = { |
0996517c HV |
161 | "Bound 4", |
162 | "Bound 8", | |
163 | "Bound 12", | |
164 | "Bound 16", | |
165 | NULL | |
166 | }; | |
513521ea | 167 | static const char * const mpeg_audio_emphasis[] = { |
0996517c HV |
168 | "No Emphasis", |
169 | "50/15 us", | |
170 | "CCITT J17", | |
171 | NULL | |
172 | }; | |
513521ea | 173 | static const char * const mpeg_audio_crc[] = { |
0996517c HV |
174 | "No CRC", |
175 | "16-bit CRC", | |
176 | NULL | |
177 | }; | |
24c19a21 HV |
178 | static const char * const mpeg_audio_dec_playback[] = { |
179 | "Auto", | |
180 | "Stereo", | |
181 | "Left", | |
182 | "Right", | |
183 | "Mono", | |
184 | "Swapped Stereo", | |
185 | NULL | |
186 | }; | |
513521ea | 187 | static const char * const mpeg_video_encoding[] = { |
0996517c HV |
188 | "MPEG-1", |
189 | "MPEG-2", | |
190 | "MPEG-4 AVC", | |
191 | NULL | |
192 | }; | |
513521ea | 193 | static const char * const mpeg_video_aspect[] = { |
0996517c HV |
194 | "1x1", |
195 | "4x3", | |
196 | "16x9", | |
197 | "2.21x1", | |
198 | NULL | |
199 | }; | |
513521ea | 200 | static const char * const mpeg_video_bitrate_mode[] = { |
0996517c HV |
201 | "Variable Bitrate", |
202 | "Constant Bitrate", | |
203 | NULL | |
204 | }; | |
513521ea | 205 | static const char * const mpeg_stream_type[] = { |
0996517c HV |
206 | "MPEG-2 Program Stream", |
207 | "MPEG-2 Transport Stream", | |
208 | "MPEG-1 System Stream", | |
209 | "MPEG-2 DVD-compatible Stream", | |
210 | "MPEG-1 VCD-compatible Stream", | |
211 | "MPEG-2 SVCD-compatible Stream", | |
212 | NULL | |
213 | }; | |
513521ea | 214 | static const char * const mpeg_stream_vbi_fmt[] = { |
0996517c | 215 | "No VBI", |
064f5096 | 216 | "Private Packet, IVTV Format", |
0996517c HV |
217 | NULL |
218 | }; | |
513521ea | 219 | static const char * const camera_power_line_frequency[] = { |
0996517c HV |
220 | "Disabled", |
221 | "50 Hz", | |
222 | "60 Hz", | |
d26a6635 | 223 | "Auto", |
0996517c HV |
224 | NULL |
225 | }; | |
513521ea | 226 | static const char * const camera_exposure_auto[] = { |
0996517c HV |
227 | "Auto Mode", |
228 | "Manual Mode", | |
229 | "Shutter Priority Mode", | |
230 | "Aperture Priority Mode", | |
231 | NULL | |
232 | }; | |
cf072139 SN |
233 | static const char * const camera_exposure_metering[] = { |
234 | "Average", | |
235 | "Center Weighted", | |
236 | "Spot", | |
fc39f46b | 237 | "Matrix", |
cf072139 SN |
238 | NULL |
239 | }; | |
2272ab65 SN |
240 | static const char * const camera_auto_focus_range[] = { |
241 | "Auto", | |
242 | "Normal", | |
243 | "Macro", | |
244 | "Infinity", | |
245 | NULL | |
246 | }; | |
513521ea | 247 | static const char * const colorfx[] = { |
0996517c HV |
248 | "None", |
249 | "Black & White", | |
250 | "Sepia", | |
251 | "Negative", | |
252 | "Emboss", | |
253 | "Sketch", | |
064f5096 KD |
254 | "Sky Blue", |
255 | "Grass Green", | |
256 | "Skin Whiten", | |
0996517c | 257 | "Vivid", |
6491d1ad SN |
258 | "Aqua", |
259 | "Art Freeze", | |
260 | "Silhouette", | |
261 | "Solarization", | |
262 | "Antique", | |
263 | "Set Cb/Cr", | |
0996517c HV |
264 | NULL |
265 | }; | |
e40a0573 SN |
266 | static const char * const auto_n_preset_white_balance[] = { |
267 | "Manual", | |
268 | "Auto", | |
269 | "Incandescent", | |
270 | "Fluorescent", | |
271 | "Fluorescent H", | |
272 | "Horizon", | |
273 | "Daylight", | |
274 | "Flash", | |
275 | "Cloudy", | |
276 | "Shade", | |
277 | NULL, | |
278 | }; | |
7f84ad8b SN |
279 | static const char * const camera_iso_sensitivity_auto[] = { |
280 | "Manual", | |
281 | "Auto", | |
282 | NULL | |
283 | }; | |
0bf6b7dc SN |
284 | static const char * const scene_mode[] = { |
285 | "None", | |
286 | "Backlight", | |
287 | "Beach/Snow", | |
288 | "Candle Light", | |
289 | "Dusk/Dawn", | |
290 | "Fall Colors", | |
291 | "Fireworks", | |
292 | "Landscape", | |
293 | "Night", | |
294 | "Party/Indoor", | |
295 | "Portrait", | |
296 | "Sports", | |
297 | "Sunset", | |
298 | "Text", | |
299 | NULL | |
300 | }; | |
aec330a8 AS |
301 | static const char * const tune_emphasis[] = { |
302 | "None", | |
f769c260 HV |
303 | "50 Microseconds", |
304 | "75 Microseconds", | |
0996517c HV |
305 | NULL, |
306 | }; | |
064f5096 KD |
307 | static const char * const header_mode[] = { |
308 | "Separate Buffer", | |
309 | "Joined With 1st Frame", | |
310 | NULL, | |
311 | }; | |
312 | static const char * const multi_slice[] = { | |
313 | "Single", | |
314 | "Max Macroblocks", | |
315 | "Max Bytes", | |
316 | NULL, | |
317 | }; | |
318 | static const char * const entropy_mode[] = { | |
319 | "CAVLC", | |
320 | "CABAC", | |
321 | NULL, | |
322 | }; | |
323 | static const char * const mpeg_h264_level[] = { | |
324 | "1", | |
325 | "1b", | |
326 | "1.1", | |
327 | "1.2", | |
328 | "1.3", | |
329 | "2", | |
330 | "2.1", | |
331 | "2.2", | |
332 | "3", | |
333 | "3.1", | |
334 | "3.2", | |
335 | "4", | |
336 | "4.1", | |
337 | "4.2", | |
338 | "5", | |
339 | "5.1", | |
340 | NULL, | |
341 | }; | |
342 | static const char * const h264_loop_filter[] = { | |
343 | "Enabled", | |
344 | "Disabled", | |
345 | "Disabled at Slice Boundary", | |
346 | NULL, | |
347 | }; | |
348 | static const char * const h264_profile[] = { | |
349 | "Baseline", | |
350 | "Constrained Baseline", | |
351 | "Main", | |
352 | "Extended", | |
353 | "High", | |
354 | "High 10", | |
355 | "High 422", | |
356 | "High 444 Predictive", | |
357 | "High 10 Intra", | |
358 | "High 422 Intra", | |
359 | "High 444 Intra", | |
360 | "CAVLC 444 Intra", | |
361 | "Scalable Baseline", | |
362 | "Scalable High", | |
363 | "Scalable High Intra", | |
15d6e91a | 364 | "Stereo High", |
064f5096 KD |
365 | "Multiview High", |
366 | NULL, | |
367 | }; | |
368 | static const char * const vui_sar_idc[] = { | |
369 | "Unspecified", | |
370 | "1:1", | |
371 | "12:11", | |
372 | "10:11", | |
373 | "16:11", | |
374 | "40:33", | |
375 | "24:11", | |
376 | "20:11", | |
377 | "32:11", | |
378 | "80:33", | |
379 | "18:11", | |
380 | "15:11", | |
381 | "64:33", | |
382 | "160:99", | |
383 | "4:3", | |
384 | "3:2", | |
385 | "2:1", | |
386 | "Extended SAR", | |
387 | NULL, | |
388 | }; | |
2e81dde9 AK |
389 | static const char * const h264_fp_arrangement_type[] = { |
390 | "Checkerboard", | |
391 | "Column", | |
392 | "Row", | |
393 | "Side by Side", | |
394 | "Top Bottom", | |
395 | "Temporal", | |
396 | NULL, | |
397 | }; | |
398 | static const char * const h264_fmo_map_type[] = { | |
399 | "Interleaved Slices", | |
400 | "Scattered Slices", | |
401 | "Foreground with Leftover", | |
402 | "Box Out", | |
403 | "Raster Scan", | |
404 | "Wipe Scan", | |
405 | "Explicit", | |
406 | NULL, | |
407 | }; | |
064f5096 KD |
408 | static const char * const mpeg_mpeg4_level[] = { |
409 | "0", | |
410 | "0b", | |
411 | "1", | |
412 | "2", | |
413 | "3", | |
414 | "3b", | |
415 | "4", | |
416 | "5", | |
417 | NULL, | |
418 | }; | |
419 | static const char * const mpeg4_profile[] = { | |
420 | "Simple", | |
f769c260 | 421 | "Advanced Simple", |
064f5096 KD |
422 | "Core", |
423 | "Simple Scalable", | |
39c1cb2b | 424 | "Advanced Coding Efficiency", |
064f5096 KD |
425 | NULL, |
426 | }; | |
427 | ||
bc9028e1 AK |
428 | static const char * const vpx_golden_frame_sel[] = { |
429 | "Use Previous Frame", | |
430 | "Use Previous Specific Frame", | |
431 | NULL, | |
432 | }; | |
433 | ||
0b159acd SA |
434 | static const char * const flash_led_mode[] = { |
435 | "Off", | |
436 | "Flash", | |
437 | "Torch", | |
438 | NULL, | |
439 | }; | |
440 | static const char * const flash_strobe_source[] = { | |
441 | "Software", | |
442 | "External", | |
443 | NULL, | |
444 | }; | |
0996517c | 445 | |
c7361ae1 SN |
446 | static const char * const jpeg_chroma_subsampling[] = { |
447 | "4:4:4", | |
448 | "4:2:2", | |
449 | "4:2:0", | |
450 | "4:1:1", | |
451 | "4:1:0", | |
452 | "Gray", | |
453 | NULL, | |
454 | }; | |
977ebec7 HV |
455 | static const char * const dv_tx_mode[] = { |
456 | "DVI-D", | |
457 | "HDMI", | |
458 | NULL, | |
459 | }; | |
460 | static const char * const dv_rgb_range[] = { | |
461 | "Automatic", | |
462 | "RGB limited range (16-235)", | |
463 | "RGB full range (0-255)", | |
464 | NULL, | |
465 | }; | |
45cc29af HV |
466 | static const char * const dv_it_content_type[] = { |
467 | "Graphics", | |
468 | "Photo", | |
469 | "Cinema", | |
470 | "Game", | |
471 | "No IT Content", | |
472 | NULL, | |
473 | }; | |
a77b4fc0 HV |
474 | static const char * const detect_md_mode[] = { |
475 | "Disabled", | |
476 | "Global", | |
477 | "Threshold Grid", | |
478 | "Region Grid", | |
479 | NULL, | |
480 | }; | |
977ebec7 | 481 | |
c7361ae1 | 482 | |
0996517c HV |
483 | switch (id) { |
484 | case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: | |
485 | return mpeg_audio_sampling_freq; | |
486 | case V4L2_CID_MPEG_AUDIO_ENCODING: | |
487 | return mpeg_audio_encoding; | |
488 | case V4L2_CID_MPEG_AUDIO_L1_BITRATE: | |
489 | return mpeg_audio_l1_bitrate; | |
490 | case V4L2_CID_MPEG_AUDIO_L2_BITRATE: | |
491 | return mpeg_audio_l2_bitrate; | |
492 | case V4L2_CID_MPEG_AUDIO_L3_BITRATE: | |
493 | return mpeg_audio_l3_bitrate; | |
494 | case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: | |
495 | return mpeg_audio_ac3_bitrate; | |
496 | case V4L2_CID_MPEG_AUDIO_MODE: | |
497 | return mpeg_audio_mode; | |
498 | case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: | |
499 | return mpeg_audio_mode_extension; | |
500 | case V4L2_CID_MPEG_AUDIO_EMPHASIS: | |
501 | return mpeg_audio_emphasis; | |
502 | case V4L2_CID_MPEG_AUDIO_CRC: | |
503 | return mpeg_audio_crc; | |
24c19a21 HV |
504 | case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: |
505 | case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: | |
506 | return mpeg_audio_dec_playback; | |
0996517c HV |
507 | case V4L2_CID_MPEG_VIDEO_ENCODING: |
508 | return mpeg_video_encoding; | |
509 | case V4L2_CID_MPEG_VIDEO_ASPECT: | |
510 | return mpeg_video_aspect; | |
511 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: | |
512 | return mpeg_video_bitrate_mode; | |
513 | case V4L2_CID_MPEG_STREAM_TYPE: | |
514 | return mpeg_stream_type; | |
515 | case V4L2_CID_MPEG_STREAM_VBI_FMT: | |
516 | return mpeg_stream_vbi_fmt; | |
517 | case V4L2_CID_POWER_LINE_FREQUENCY: | |
518 | return camera_power_line_frequency; | |
519 | case V4L2_CID_EXPOSURE_AUTO: | |
520 | return camera_exposure_auto; | |
cf072139 SN |
521 | case V4L2_CID_EXPOSURE_METERING: |
522 | return camera_exposure_metering; | |
2272ab65 SN |
523 | case V4L2_CID_AUTO_FOCUS_RANGE: |
524 | return camera_auto_focus_range; | |
0996517c HV |
525 | case V4L2_CID_COLORFX: |
526 | return colorfx; | |
e40a0573 SN |
527 | case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: |
528 | return auto_n_preset_white_balance; | |
7f84ad8b SN |
529 | case V4L2_CID_ISO_SENSITIVITY_AUTO: |
530 | return camera_iso_sensitivity_auto; | |
0bf6b7dc SN |
531 | case V4L2_CID_SCENE_MODE: |
532 | return scene_mode; | |
0996517c | 533 | case V4L2_CID_TUNE_PREEMPHASIS: |
aec330a8 AS |
534 | return tune_emphasis; |
535 | case V4L2_CID_TUNE_DEEMPHASIS: | |
536 | return tune_emphasis; | |
0b159acd SA |
537 | case V4L2_CID_FLASH_LED_MODE: |
538 | return flash_led_mode; | |
539 | case V4L2_CID_FLASH_STROBE_SOURCE: | |
540 | return flash_strobe_source; | |
064f5096 KD |
541 | case V4L2_CID_MPEG_VIDEO_HEADER_MODE: |
542 | return header_mode; | |
543 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: | |
544 | return multi_slice; | |
545 | case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: | |
546 | return entropy_mode; | |
547 | case V4L2_CID_MPEG_VIDEO_H264_LEVEL: | |
548 | return mpeg_h264_level; | |
549 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: | |
550 | return h264_loop_filter; | |
551 | case V4L2_CID_MPEG_VIDEO_H264_PROFILE: | |
552 | return h264_profile; | |
553 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: | |
554 | return vui_sar_idc; | |
2e81dde9 AK |
555 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: |
556 | return h264_fp_arrangement_type; | |
557 | case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: | |
558 | return h264_fmo_map_type; | |
064f5096 KD |
559 | case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: |
560 | return mpeg_mpeg4_level; | |
561 | case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: | |
562 | return mpeg4_profile; | |
bc9028e1 AK |
563 | case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: |
564 | return vpx_golden_frame_sel; | |
c7361ae1 SN |
565 | case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: |
566 | return jpeg_chroma_subsampling; | |
977ebec7 HV |
567 | case V4L2_CID_DV_TX_MODE: |
568 | return dv_tx_mode; | |
569 | case V4L2_CID_DV_TX_RGB_RANGE: | |
570 | case V4L2_CID_DV_RX_RGB_RANGE: | |
571 | return dv_rgb_range; | |
45cc29af HV |
572 | case V4L2_CID_DV_TX_IT_CONTENT_TYPE: |
573 | case V4L2_CID_DV_RX_IT_CONTENT_TYPE: | |
574 | return dv_it_content_type; | |
a77b4fc0 HV |
575 | case V4L2_CID_DETECT_MD_MODE: |
576 | return detect_md_mode; | |
c7361ae1 | 577 | |
0996517c HV |
578 | default: |
579 | return NULL; | |
580 | } | |
581 | } | |
582 | EXPORT_SYMBOL(v4l2_ctrl_get_menu); | |
583 | ||
bc9028e1 | 584 | #define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); arr; }) |
d1e9b7c1 SN |
585 | /* |
586 | * Returns NULL or an s64 type array containing the menu for given | |
587 | * control ID. The total number of the menu items is returned in @len. | |
588 | */ | |
4eed9b33 | 589 | const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len) |
d1e9b7c1 | 590 | { |
4eed9b33 | 591 | static const s64 qmenu_int_vpx_num_partitions[] = { |
bc9028e1 AK |
592 | 1, 2, 4, 8, |
593 | }; | |
594 | ||
4eed9b33 | 595 | static const s64 qmenu_int_vpx_num_ref_frames[] = { |
bc9028e1 AK |
596 | 1, 2, 3, |
597 | }; | |
598 | ||
d1e9b7c1 | 599 | switch (id) { |
bc9028e1 AK |
600 | case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: |
601 | return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len); | |
602 | case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: | |
603 | return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len); | |
d1e9b7c1 SN |
604 | default: |
605 | *len = 0; | |
606 | return NULL; | |
2028c71d | 607 | } |
d1e9b7c1 SN |
608 | } |
609 | EXPORT_SYMBOL(v4l2_ctrl_get_int_menu); | |
610 | ||
0996517c HV |
611 | /* Return the control name. */ |
612 | const char *v4l2_ctrl_get_name(u32 id) | |
613 | { | |
614 | switch (id) { | |
615 | /* USER controls */ | |
59253f29 | 616 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ |
6dd5aff3 MCC |
617 | case V4L2_CID_USER_CLASS: return "User Controls"; |
618 | case V4L2_CID_BRIGHTNESS: return "Brightness"; | |
619 | case V4L2_CID_CONTRAST: return "Contrast"; | |
620 | case V4L2_CID_SATURATION: return "Saturation"; | |
621 | case V4L2_CID_HUE: return "Hue"; | |
622 | case V4L2_CID_AUDIO_VOLUME: return "Volume"; | |
623 | case V4L2_CID_AUDIO_BALANCE: return "Balance"; | |
624 | case V4L2_CID_AUDIO_BASS: return "Bass"; | |
625 | case V4L2_CID_AUDIO_TREBLE: return "Treble"; | |
626 | case V4L2_CID_AUDIO_MUTE: return "Mute"; | |
627 | case V4L2_CID_AUDIO_LOUDNESS: return "Loudness"; | |
0996517c HV |
628 | case V4L2_CID_BLACK_LEVEL: return "Black Level"; |
629 | case V4L2_CID_AUTO_WHITE_BALANCE: return "White Balance, Automatic"; | |
630 | case V4L2_CID_DO_WHITE_BALANCE: return "Do White Balance"; | |
631 | case V4L2_CID_RED_BALANCE: return "Red Balance"; | |
632 | case V4L2_CID_BLUE_BALANCE: return "Blue Balance"; | |
633 | case V4L2_CID_GAMMA: return "Gamma"; | |
634 | case V4L2_CID_EXPOSURE: return "Exposure"; | |
635 | case V4L2_CID_AUTOGAIN: return "Gain, Automatic"; | |
636 | case V4L2_CID_GAIN: return "Gain"; | |
637 | case V4L2_CID_HFLIP: return "Horizontal Flip"; | |
638 | case V4L2_CID_VFLIP: return "Vertical Flip"; | |
0996517c HV |
639 | case V4L2_CID_POWER_LINE_FREQUENCY: return "Power Line Frequency"; |
640 | case V4L2_CID_HUE_AUTO: return "Hue, Automatic"; | |
641 | case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature"; | |
642 | case V4L2_CID_SHARPNESS: return "Sharpness"; | |
643 | case V4L2_CID_BACKLIGHT_COMPENSATION: return "Backlight Compensation"; | |
644 | case V4L2_CID_CHROMA_AGC: return "Chroma AGC"; | |
0996517c HV |
645 | case V4L2_CID_COLOR_KILLER: return "Color Killer"; |
646 | case V4L2_CID_COLORFX: return "Color Effects"; | |
647 | case V4L2_CID_AUTOBRIGHTNESS: return "Brightness, Automatic"; | |
648 | case V4L2_CID_BAND_STOP_FILTER: return "Band-Stop Filter"; | |
649 | case V4L2_CID_ROTATE: return "Rotate"; | |
650 | case V4L2_CID_BG_COLOR: return "Background Color"; | |
6c8d6111 | 651 | case V4L2_CID_CHROMA_GAIN: return "Chroma Gain"; |
008d35f2 JFM |
652 | case V4L2_CID_ILLUMINATORS_1: return "Illuminator 1"; |
653 | case V4L2_CID_ILLUMINATORS_2: return "Illuminator 2"; | |
f08aacf8 HV |
654 | case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: return "Min Number of Capture Buffers"; |
655 | case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: return "Min Number of Output Buffers"; | |
cc1d3272 | 656 | case V4L2_CID_ALPHA_COMPONENT: return "Alpha Component"; |
6491d1ad | 657 | case V4L2_CID_COLORFX_CBCR: return "Color Effects, CbCr"; |
0996517c | 658 | |
bc9028e1 AK |
659 | /* Codec controls */ |
660 | /* The MPEG controls are applicable to all codec controls | |
661 | * and the 'MPEG' part of the define is historical */ | |
6c8d6111 | 662 | /* Keep the order of the 'case's the same as in videodev2.h! */ |
bc9028e1 | 663 | case V4L2_CID_MPEG_CLASS: return "Codec Controls"; |
6dd5aff3 MCC |
664 | case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type"; |
665 | case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID"; | |
666 | case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID"; | |
667 | case V4L2_CID_MPEG_STREAM_PID_VIDEO: return "Stream Video Program ID"; | |
668 | case V4L2_CID_MPEG_STREAM_PID_PCR: return "Stream PCR Program ID"; | |
6c8d6111 HV |
669 | case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID"; |
670 | case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID"; | |
671 | case V4L2_CID_MPEG_STREAM_VBI_FMT: return "Stream VBI Format"; | |
0996517c | 672 | case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency"; |
6dd5aff3 MCC |
673 | case V4L2_CID_MPEG_AUDIO_ENCODING: return "Audio Encoding"; |
674 | case V4L2_CID_MPEG_AUDIO_L1_BITRATE: return "Audio Layer I Bitrate"; | |
675 | case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return "Audio Layer II Bitrate"; | |
676 | case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return "Audio Layer III Bitrate"; | |
677 | case V4L2_CID_MPEG_AUDIO_MODE: return "Audio Stereo Mode"; | |
0996517c | 678 | case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension"; |
6dd5aff3 MCC |
679 | case V4L2_CID_MPEG_AUDIO_EMPHASIS: return "Audio Emphasis"; |
680 | case V4L2_CID_MPEG_AUDIO_CRC: return "Audio CRC"; | |
681 | case V4L2_CID_MPEG_AUDIO_MUTE: return "Audio Mute"; | |
682 | case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: return "Audio AAC Bitrate"; | |
683 | case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: return "Audio AC-3 Bitrate"; | |
24c19a21 HV |
684 | case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: return "Audio Playback"; |
685 | case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback"; | |
6dd5aff3 MCC |
686 | case V4L2_CID_MPEG_VIDEO_ENCODING: return "Video Encoding"; |
687 | case V4L2_CID_MPEG_VIDEO_ASPECT: return "Video Aspect"; | |
688 | case V4L2_CID_MPEG_VIDEO_B_FRAMES: return "Video B Frames"; | |
689 | case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return "Video GOP Size"; | |
690 | case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure"; | |
691 | case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown"; | |
692 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode"; | |
693 | case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate"; | |
694 | case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate"; | |
0996517c | 695 | case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation"; |
6dd5aff3 | 696 | case V4L2_CID_MPEG_VIDEO_MUTE: return "Video Mute"; |
0996517c | 697 | case V4L2_CID_MPEG_VIDEO_MUTE_YUV: return "Video Mute YUV"; |
064f5096 KD |
698 | case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: return "Decoder Slice Interface"; |
699 | case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: return "MPEG4 Loop Filter Enable"; | |
f08aacf8 | 700 | case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: return "Number of Intra Refresh MBs"; |
064f5096 KD |
701 | case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: return "Frame Level Rate Control Enable"; |
702 | case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: return "H264 MB Level Rate Control"; | |
703 | case V4L2_CID_MPEG_VIDEO_HEADER_MODE: return "Sequence Header Mode"; | |
f08aacf8 | 704 | case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC: return "Max Number of Reference Pics"; |
064f5096 | 705 | case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP: return "H263 I-Frame QP Value"; |
f08aacf8 HV |
706 | case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP: return "H263 P-Frame QP Value"; |
707 | case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP: return "H263 B-Frame QP Value"; | |
064f5096 KD |
708 | case V4L2_CID_MPEG_VIDEO_H263_MIN_QP: return "H263 Minimum QP Value"; |
709 | case V4L2_CID_MPEG_VIDEO_H263_MAX_QP: return "H263 Maximum QP Value"; | |
710 | case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP: return "H264 I-Frame QP Value"; | |
f08aacf8 HV |
711 | case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP: return "H264 P-Frame QP Value"; |
712 | case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP: return "H264 B-Frame QP Value"; | |
064f5096 KD |
713 | case V4L2_CID_MPEG_VIDEO_H264_MAX_QP: return "H264 Maximum QP Value"; |
714 | case V4L2_CID_MPEG_VIDEO_H264_MIN_QP: return "H264 Minimum QP Value"; | |
715 | case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: return "H264 8x8 Transform Enable"; | |
716 | case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE: return "H264 CPB Buffer Size"; | |
f08aacf8 HV |
717 | case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: return "H264 Entropy Mode"; |
718 | case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD: return "H264 I-Frame Period"; | |
064f5096 KD |
719 | case V4L2_CID_MPEG_VIDEO_H264_LEVEL: return "H264 Level"; |
720 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA: return "H264 Loop Filter Alpha Offset"; | |
721 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA: return "H264 Loop Filter Beta Offset"; | |
722 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: return "H264 Loop Filter Mode"; | |
723 | case V4L2_CID_MPEG_VIDEO_H264_PROFILE: return "H264 Profile"; | |
724 | case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT: return "Vertical Size of SAR"; | |
725 | case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH: return "Horizontal Size of SAR"; | |
726 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: return "Aspect Ratio VUI Enable"; | |
727 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: return "VUI Aspect Ratio IDC"; | |
2e81dde9 AK |
728 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING: return "H264 Enable Frame Packing SEI"; |
729 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0: return "H264 Set Curr. Frame as Frame0"; | |
730 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: return "H264 FP Arrangement Type"; | |
731 | case V4L2_CID_MPEG_VIDEO_H264_FMO: return "H264 Flexible MB Ordering"; | |
732 | case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: return "H264 Map Type for FMO"; | |
733 | case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP: return "H264 FMO Number of Slice Groups"; | |
734 | case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION: return "H264 FMO Direction of Change"; | |
735 | case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE: return "H264 FMO Size of 1st Slice Grp"; | |
736 | case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH: return "H264 FMO No. of Consecutive MBs"; | |
737 | case V4L2_CID_MPEG_VIDEO_H264_ASO: return "H264 Arbitrary Slice Ordering"; | |
738 | case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER: return "H264 ASO Slice Order"; | |
739 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING: return "Enable H264 Hierarchical Coding"; | |
740 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: return "H264 Hierarchical Coding Type"; | |
741 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers"; | |
742 | case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP: | |
743 | return "H264 Set QP Value for HC Layers"; | |
064f5096 | 744 | case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP: return "MPEG4 I-Frame QP Value"; |
f08aacf8 HV |
745 | case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP: return "MPEG4 P-Frame QP Value"; |
746 | case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP: return "MPEG4 B-Frame QP Value"; | |
064f5096 KD |
747 | case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP: return "MPEG4 Minimum QP Value"; |
748 | case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP: return "MPEG4 Maximum QP Value"; | |
749 | case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: return "MPEG4 Level"; | |
750 | case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: return "MPEG4 Profile"; | |
751 | case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: return "Quarter Pixel Search Enable"; | |
f08aacf8 HV |
752 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES: return "Maximum Bytes in a Slice"; |
753 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB: return "Number of MBs in a Slice"; | |
754 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: return "Slice Partitioning Method"; | |
064f5096 | 755 | case V4L2_CID_MPEG_VIDEO_VBV_SIZE: return "VBV Buffer Size"; |
24c19a21 HV |
756 | case V4L2_CID_MPEG_VIDEO_DEC_PTS: return "Video Decoder PTS"; |
757 | case V4L2_CID_MPEG_VIDEO_DEC_FRAME: return "Video Decoder Frame Count"; | |
2e81dde9 | 758 | case V4L2_CID_MPEG_VIDEO_VBV_DELAY: return "Initial Delay for VBV Control"; |
bf0bedd3 AG |
759 | case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: return "Horizontal MV Search Range"; |
760 | case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: return "Vertical MV Search Range"; | |
9ca5470c | 761 | case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header"; |
cedc1210 | 762 | case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key Frame"; |
0996517c | 763 | |
bc9028e1 AK |
764 | /* VPX controls */ |
765 | case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: return "VPX Number of Partitions"; | |
766 | case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4: return "VPX Intra Mode Decision Disable"; | |
767 | case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: return "VPX No. of Refs for P Frame"; | |
768 | case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL: return "VPX Loop Filter Level Range"; | |
769 | case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS: return "VPX Deblocking Effect Control"; | |
770 | case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD: return "VPX Golden Frame Refresh Period"; | |
771 | case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: return "VPX Golden Frame Indicator"; | |
4773ab99 AK |
772 | case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP: return "VPX Minimum QP Value"; |
773 | case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP: return "VPX Maximum QP Value"; | |
774 | case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP: return "VPX I-Frame QP Value"; | |
775 | case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP: return "VPX P-Frame QP Value"; | |
bbd8f3fe | 776 | case V4L2_CID_MPEG_VIDEO_VPX_PROFILE: return "VPX Profile"; |
bc9028e1 | 777 | |
0996517c | 778 | /* CAMERA controls */ |
59253f29 | 779 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ |
0996517c HV |
780 | case V4L2_CID_CAMERA_CLASS: return "Camera Controls"; |
781 | case V4L2_CID_EXPOSURE_AUTO: return "Auto Exposure"; | |
782 | case V4L2_CID_EXPOSURE_ABSOLUTE: return "Exposure Time, Absolute"; | |
783 | case V4L2_CID_EXPOSURE_AUTO_PRIORITY: return "Exposure, Dynamic Framerate"; | |
784 | case V4L2_CID_PAN_RELATIVE: return "Pan, Relative"; | |
785 | case V4L2_CID_TILT_RELATIVE: return "Tilt, Relative"; | |
786 | case V4L2_CID_PAN_RESET: return "Pan, Reset"; | |
787 | case V4L2_CID_TILT_RESET: return "Tilt, Reset"; | |
788 | case V4L2_CID_PAN_ABSOLUTE: return "Pan, Absolute"; | |
789 | case V4L2_CID_TILT_ABSOLUTE: return "Tilt, Absolute"; | |
790 | case V4L2_CID_FOCUS_ABSOLUTE: return "Focus, Absolute"; | |
791 | case V4L2_CID_FOCUS_RELATIVE: return "Focus, Relative"; | |
2272ab65 | 792 | case V4L2_CID_FOCUS_AUTO: return "Focus, Automatic Continuous"; |
0996517c HV |
793 | case V4L2_CID_ZOOM_ABSOLUTE: return "Zoom, Absolute"; |
794 | case V4L2_CID_ZOOM_RELATIVE: return "Zoom, Relative"; | |
795 | case V4L2_CID_ZOOM_CONTINUOUS: return "Zoom, Continuous"; | |
796 | case V4L2_CID_PRIVACY: return "Privacy"; | |
6c8d6111 HV |
797 | case V4L2_CID_IRIS_ABSOLUTE: return "Iris, Absolute"; |
798 | case V4L2_CID_IRIS_RELATIVE: return "Iris, Relative"; | |
d58083c9 | 799 | case V4L2_CID_AUTO_EXPOSURE_BIAS: return "Auto Exposure, Bias"; |
e40a0573 | 800 | case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset"; |
44d44a1a | 801 | case V4L2_CID_WIDE_DYNAMIC_RANGE: return "Wide Dynamic Range"; |
82b3056c | 802 | case V4L2_CID_IMAGE_STABILIZATION: return "Image Stabilization"; |
7f84ad8b SN |
803 | case V4L2_CID_ISO_SENSITIVITY: return "ISO Sensitivity"; |
804 | case V4L2_CID_ISO_SENSITIVITY_AUTO: return "ISO Sensitivity, Auto"; | |
cf072139 | 805 | case V4L2_CID_EXPOSURE_METERING: return "Exposure, Metering Mode"; |
0bf6b7dc | 806 | case V4L2_CID_SCENE_MODE: return "Scene Mode"; |
fc162a09 | 807 | case V4L2_CID_3A_LOCK: return "3A Lock"; |
2272ab65 SN |
808 | case V4L2_CID_AUTO_FOCUS_START: return "Auto Focus, Start"; |
809 | case V4L2_CID_AUTO_FOCUS_STOP: return "Auto Focus, Stop"; | |
810 | case V4L2_CID_AUTO_FOCUS_STATUS: return "Auto Focus, Status"; | |
811 | case V4L2_CID_AUTO_FOCUS_RANGE: return "Auto Focus, Range"; | |
e3d6eb1c VP |
812 | case V4L2_CID_PAN_SPEED: return "Pan, Speed"; |
813 | case V4L2_CID_TILT_SPEED: return "Tilt, Speed"; | |
0996517c | 814 | |
59253f29 HV |
815 | /* FM Radio Modulator controls */ |
816 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ | |
0996517c HV |
817 | case V4L2_CID_FM_TX_CLASS: return "FM Radio Modulator Controls"; |
818 | case V4L2_CID_RDS_TX_DEVIATION: return "RDS Signal Deviation"; | |
819 | case V4L2_CID_RDS_TX_PI: return "RDS Program ID"; | |
820 | case V4L2_CID_RDS_TX_PTY: return "RDS Program Type"; | |
821 | case V4L2_CID_RDS_TX_PS_NAME: return "RDS PS Name"; | |
822 | case V4L2_CID_RDS_TX_RADIO_TEXT: return "RDS Radio Text"; | |
811c5081 HV |
823 | case V4L2_CID_RDS_TX_MONO_STEREO: return "RDS Stereo"; |
824 | case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: return "RDS Artificial Head"; | |
825 | case V4L2_CID_RDS_TX_COMPRESSED: return "RDS Compressed"; | |
826 | case V4L2_CID_RDS_TX_DYNAMIC_PTY: return "RDS Dynamic PTY"; | |
827 | case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement"; | |
828 | case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: return "RDS Traffic Program"; | |
829 | case V4L2_CID_RDS_TX_MUSIC_SPEECH: return "RDS Music"; | |
830 | case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: return "RDS Enable Alt Frequencies"; | |
831 | case V4L2_CID_RDS_TX_ALT_FREQS: return "RDS Alternate Frequencies"; | |
0996517c HV |
832 | case V4L2_CID_AUDIO_LIMITER_ENABLED: return "Audio Limiter Feature Enabled"; |
833 | case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time"; | |
834 | case V4L2_CID_AUDIO_LIMITER_DEVIATION: return "Audio Limiter Deviation"; | |
f08aacf8 | 835 | case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled"; |
0996517c HV |
836 | case V4L2_CID_AUDIO_COMPRESSION_GAIN: return "Audio Compression Gain"; |
837 | case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold"; | |
838 | case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time"; | |
839 | case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time"; | |
840 | case V4L2_CID_PILOT_TONE_ENABLED: return "Pilot Tone Feature Enabled"; | |
841 | case V4L2_CID_PILOT_TONE_DEVIATION: return "Pilot Tone Deviation"; | |
842 | case V4L2_CID_PILOT_TONE_FREQUENCY: return "Pilot Tone Frequency"; | |
f08aacf8 | 843 | case V4L2_CID_TUNE_PREEMPHASIS: return "Pre-Emphasis"; |
0996517c HV |
844 | case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level"; |
845 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor"; | |
846 | ||
0b159acd | 847 | /* Flash controls */ |
59253f29 | 848 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ |
f08aacf8 HV |
849 | case V4L2_CID_FLASH_CLASS: return "Flash Controls"; |
850 | case V4L2_CID_FLASH_LED_MODE: return "LED Mode"; | |
851 | case V4L2_CID_FLASH_STROBE_SOURCE: return "Strobe Source"; | |
0b159acd | 852 | case V4L2_CID_FLASH_STROBE: return "Strobe"; |
f08aacf8 HV |
853 | case V4L2_CID_FLASH_STROBE_STOP: return "Stop Strobe"; |
854 | case V4L2_CID_FLASH_STROBE_STATUS: return "Strobe Status"; | |
855 | case V4L2_CID_FLASH_TIMEOUT: return "Strobe Timeout"; | |
856 | case V4L2_CID_FLASH_INTENSITY: return "Intensity, Flash Mode"; | |
857 | case V4L2_CID_FLASH_TORCH_INTENSITY: return "Intensity, Torch Mode"; | |
858 | case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator"; | |
0b159acd SA |
859 | case V4L2_CID_FLASH_FAULT: return "Faults"; |
860 | case V4L2_CID_FLASH_CHARGE: return "Charge"; | |
f08aacf8 | 861 | case V4L2_CID_FLASH_READY: return "Ready to Strobe"; |
0b159acd | 862 | |
c7361ae1 | 863 | /* JPEG encoder controls */ |
59253f29 | 864 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ |
c7361ae1 SN |
865 | case V4L2_CID_JPEG_CLASS: return "JPEG Compression Controls"; |
866 | case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: return "Chroma Subsampling"; | |
867 | case V4L2_CID_JPEG_RESTART_INTERVAL: return "Restart Interval"; | |
868 | case V4L2_CID_JPEG_COMPRESSION_QUALITY: return "Compression Quality"; | |
869 | case V4L2_CID_JPEG_ACTIVE_MARKER: return "Active Markers"; | |
870 | ||
8c9d236e | 871 | /* Image source controls */ |
59253f29 | 872 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ |
8c9d236e SA |
873 | case V4L2_CID_IMAGE_SOURCE_CLASS: return "Image Source Controls"; |
874 | case V4L2_CID_VBLANK: return "Vertical Blanking"; | |
875 | case V4L2_CID_HBLANK: return "Horizontal Blanking"; | |
876 | case V4L2_CID_ANALOGUE_GAIN: return "Analogue Gain"; | |
0fc87864 SA |
877 | case V4L2_CID_TEST_PATTERN_RED: return "Red Pixel Value"; |
878 | case V4L2_CID_TEST_PATTERN_GREENR: return "Green (Red) Pixel Value"; | |
879 | case V4L2_CID_TEST_PATTERN_BLUE: return "Blue Pixel Value"; | |
880 | case V4L2_CID_TEST_PATTERN_GREENB: return "Green (Blue) Pixel Value"; | |
8c9d236e | 881 | |
c643ee13 | 882 | /* Image processing controls */ |
59253f29 | 883 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ |
c643ee13 SA |
884 | case V4L2_CID_IMAGE_PROC_CLASS: return "Image Processing Controls"; |
885 | case V4L2_CID_LINK_FREQ: return "Link Frequency"; | |
886 | case V4L2_CID_PIXEL_RATE: return "Pixel Rate"; | |
5ebef0fb | 887 | case V4L2_CID_TEST_PATTERN: return "Test Pattern"; |
446e4125 | 888 | case V4L2_CID_DEINTERLACING_MODE: return "Deinterlacing Mode"; |
c643ee13 | 889 | |
977ebec7 | 890 | /* DV controls */ |
59253f29 | 891 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ |
977ebec7 HV |
892 | case V4L2_CID_DV_CLASS: return "Digital Video Controls"; |
893 | case V4L2_CID_DV_TX_HOTPLUG: return "Hotplug Present"; | |
894 | case V4L2_CID_DV_TX_RXSENSE: return "RxSense Present"; | |
895 | case V4L2_CID_DV_TX_EDID_PRESENT: return "EDID Present"; | |
896 | case V4L2_CID_DV_TX_MODE: return "Transmit Mode"; | |
897 | case V4L2_CID_DV_TX_RGB_RANGE: return "Tx RGB Quantization Range"; | |
45cc29af | 898 | case V4L2_CID_DV_TX_IT_CONTENT_TYPE: return "Tx IT Content Type"; |
977ebec7 HV |
899 | case V4L2_CID_DV_RX_POWER_PRESENT: return "Power Present"; |
900 | case V4L2_CID_DV_RX_RGB_RANGE: return "Rx RGB Quantization Range"; | |
45cc29af | 901 | case V4L2_CID_DV_RX_IT_CONTENT_TYPE: return "Rx IT Content Type"; |
977ebec7 | 902 | |
aec330a8 AS |
903 | case V4L2_CID_FM_RX_CLASS: return "FM Radio Receiver Controls"; |
904 | case V4L2_CID_TUNE_DEEMPHASIS: return "De-Emphasis"; | |
905 | case V4L2_CID_RDS_RECEPTION: return "RDS Reception"; | |
80807fad | 906 | case V4L2_CID_RF_TUNER_CLASS: return "RF Tuner Controls"; |
41018cb8 | 907 | case V4L2_CID_RF_TUNER_RF_GAIN: return "RF Gain"; |
80807fad AP |
908 | case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: return "LNA Gain, Auto"; |
909 | case V4L2_CID_RF_TUNER_LNA_GAIN: return "LNA Gain"; | |
910 | case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: return "Mixer Gain, Auto"; | |
911 | case V4L2_CID_RF_TUNER_MIXER_GAIN: return "Mixer Gain"; | |
912 | case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: return "IF Gain, Auto"; | |
913 | case V4L2_CID_RF_TUNER_IF_GAIN: return "IF Gain"; | |
3ce569fd AP |
914 | case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: return "Bandwidth, Auto"; |
915 | case V4L2_CID_RF_TUNER_BANDWIDTH: return "Bandwidth"; | |
9aa4357e | 916 | case V4L2_CID_RF_TUNER_PLL_LOCK: return "PLL Lock"; |
9570a148 HV |
917 | case V4L2_CID_RDS_RX_PTY: return "RDS Program Type"; |
918 | case V4L2_CID_RDS_RX_PS_NAME: return "RDS PS Name"; | |
919 | case V4L2_CID_RDS_RX_RADIO_TEXT: return "RDS Radio Text"; | |
920 | case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement"; | |
921 | case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: return "RDS Traffic Program"; | |
922 | case V4L2_CID_RDS_RX_MUSIC_SPEECH: return "RDS Music"; | |
a77b4fc0 HV |
923 | |
924 | /* Detection controls */ | |
925 | /* Keep the order of the 'case's the same as in v4l2-controls.h! */ | |
926 | case V4L2_CID_DETECT_CLASS: return "Detection Controls"; | |
927 | case V4L2_CID_DETECT_MD_MODE: return "Motion Detection Mode"; | |
928 | case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: return "MD Global Threshold"; | |
929 | case V4L2_CID_DETECT_MD_THRESHOLD_GRID: return "MD Threshold Grid"; | |
930 | case V4L2_CID_DETECT_MD_REGION_GRID: return "MD Region Grid"; | |
0996517c HV |
931 | default: |
932 | return NULL; | |
933 | } | |
934 | } | |
935 | EXPORT_SYMBOL(v4l2_ctrl_get_name); | |
936 | ||
937 | void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, | |
0ba2aeb6 | 938 | s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags) |
0996517c HV |
939 | { |
940 | *name = v4l2_ctrl_get_name(id); | |
941 | *flags = 0; | |
942 | ||
943 | switch (id) { | |
944 | case V4L2_CID_AUDIO_MUTE: | |
945 | case V4L2_CID_AUDIO_LOUDNESS: | |
946 | case V4L2_CID_AUTO_WHITE_BALANCE: | |
947 | case V4L2_CID_AUTOGAIN: | |
948 | case V4L2_CID_HFLIP: | |
949 | case V4L2_CID_VFLIP: | |
950 | case V4L2_CID_HUE_AUTO: | |
951 | case V4L2_CID_CHROMA_AGC: | |
952 | case V4L2_CID_COLOR_KILLER: | |
a2f8b84f | 953 | case V4L2_CID_AUTOBRIGHTNESS: |
0996517c HV |
954 | case V4L2_CID_MPEG_AUDIO_MUTE: |
955 | case V4L2_CID_MPEG_VIDEO_MUTE: | |
956 | case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: | |
957 | case V4L2_CID_MPEG_VIDEO_PULLDOWN: | |
958 | case V4L2_CID_EXPOSURE_AUTO_PRIORITY: | |
959 | case V4L2_CID_FOCUS_AUTO: | |
960 | case V4L2_CID_PRIVACY: | |
961 | case V4L2_CID_AUDIO_LIMITER_ENABLED: | |
962 | case V4L2_CID_AUDIO_COMPRESSION_ENABLED: | |
963 | case V4L2_CID_PILOT_TONE_ENABLED: | |
008d35f2 JFM |
964 | case V4L2_CID_ILLUMINATORS_1: |
965 | case V4L2_CID_ILLUMINATORS_2: | |
0b159acd SA |
966 | case V4L2_CID_FLASH_STROBE_STATUS: |
967 | case V4L2_CID_FLASH_CHARGE: | |
968 | case V4L2_CID_FLASH_READY: | |
064f5096 KD |
969 | case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: |
970 | case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: | |
971 | case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: | |
972 | case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: | |
973 | case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: | |
974 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: | |
975 | case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: | |
9ca5470c | 976 | case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: |
44d44a1a | 977 | case V4L2_CID_WIDE_DYNAMIC_RANGE: |
82b3056c | 978 | case V4L2_CID_IMAGE_STABILIZATION: |
aec330a8 | 979 | case V4L2_CID_RDS_RECEPTION: |
80807fad AP |
980 | case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: |
981 | case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: | |
982 | case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: | |
3ce569fd | 983 | case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: |
9aa4357e | 984 | case V4L2_CID_RF_TUNER_PLL_LOCK: |
811c5081 HV |
985 | case V4L2_CID_RDS_TX_MONO_STEREO: |
986 | case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: | |
987 | case V4L2_CID_RDS_TX_COMPRESSED: | |
988 | case V4L2_CID_RDS_TX_DYNAMIC_PTY: | |
989 | case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: | |
990 | case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: | |
991 | case V4L2_CID_RDS_TX_MUSIC_SPEECH: | |
992 | case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: | |
9570a148 HV |
993 | case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: |
994 | case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: | |
995 | case V4L2_CID_RDS_RX_MUSIC_SPEECH: | |
0996517c HV |
996 | *type = V4L2_CTRL_TYPE_BOOLEAN; |
997 | *min = 0; | |
998 | *max = *step = 1; | |
999 | break; | |
bf0bedd3 AG |
1000 | case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: |
1001 | case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: | |
1002 | *type = V4L2_CTRL_TYPE_INTEGER; | |
1003 | break; | |
cedc1210 | 1004 | case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: |
0996517c HV |
1005 | case V4L2_CID_PAN_RESET: |
1006 | case V4L2_CID_TILT_RESET: | |
0b159acd SA |
1007 | case V4L2_CID_FLASH_STROBE: |
1008 | case V4L2_CID_FLASH_STROBE_STOP: | |
2272ab65 SN |
1009 | case V4L2_CID_AUTO_FOCUS_START: |
1010 | case V4L2_CID_AUTO_FOCUS_STOP: | |
0996517c | 1011 | *type = V4L2_CTRL_TYPE_BUTTON; |
ef66c0ca RRD |
1012 | *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | |
1013 | V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; | |
0996517c HV |
1014 | *min = *max = *step = *def = 0; |
1015 | break; | |
1016 | case V4L2_CID_POWER_LINE_FREQUENCY: | |
1017 | case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: | |
1018 | case V4L2_CID_MPEG_AUDIO_ENCODING: | |
1019 | case V4L2_CID_MPEG_AUDIO_L1_BITRATE: | |
1020 | case V4L2_CID_MPEG_AUDIO_L2_BITRATE: | |
1021 | case V4L2_CID_MPEG_AUDIO_L3_BITRATE: | |
1022 | case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: | |
1023 | case V4L2_CID_MPEG_AUDIO_MODE: | |
1024 | case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: | |
1025 | case V4L2_CID_MPEG_AUDIO_EMPHASIS: | |
1026 | case V4L2_CID_MPEG_AUDIO_CRC: | |
24c19a21 HV |
1027 | case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: |
1028 | case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: | |
0996517c HV |
1029 | case V4L2_CID_MPEG_VIDEO_ENCODING: |
1030 | case V4L2_CID_MPEG_VIDEO_ASPECT: | |
1031 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: | |
1032 | case V4L2_CID_MPEG_STREAM_TYPE: | |
1033 | case V4L2_CID_MPEG_STREAM_VBI_FMT: | |
1034 | case V4L2_CID_EXPOSURE_AUTO: | |
2272ab65 | 1035 | case V4L2_CID_AUTO_FOCUS_RANGE: |
0996517c | 1036 | case V4L2_CID_COLORFX: |
e40a0573 | 1037 | case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: |
0996517c | 1038 | case V4L2_CID_TUNE_PREEMPHASIS: |
0b159acd SA |
1039 | case V4L2_CID_FLASH_LED_MODE: |
1040 | case V4L2_CID_FLASH_STROBE_SOURCE: | |
064f5096 KD |
1041 | case V4L2_CID_MPEG_VIDEO_HEADER_MODE: |
1042 | case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: | |
1043 | case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: | |
1044 | case V4L2_CID_MPEG_VIDEO_H264_LEVEL: | |
1045 | case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: | |
1046 | case V4L2_CID_MPEG_VIDEO_H264_PROFILE: | |
1047 | case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: | |
2e81dde9 AK |
1048 | case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: |
1049 | case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: | |
064f5096 KD |
1050 | case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: |
1051 | case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: | |
c7361ae1 | 1052 | case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: |
7f84ad8b | 1053 | case V4L2_CID_ISO_SENSITIVITY_AUTO: |
cf072139 | 1054 | case V4L2_CID_EXPOSURE_METERING: |
0bf6b7dc | 1055 | case V4L2_CID_SCENE_MODE: |
977ebec7 HV |
1056 | case V4L2_CID_DV_TX_MODE: |
1057 | case V4L2_CID_DV_TX_RGB_RANGE: | |
45cc29af | 1058 | case V4L2_CID_DV_TX_IT_CONTENT_TYPE: |
977ebec7 | 1059 | case V4L2_CID_DV_RX_RGB_RANGE: |
45cc29af | 1060 | case V4L2_CID_DV_RX_IT_CONTENT_TYPE: |
5ebef0fb | 1061 | case V4L2_CID_TEST_PATTERN: |
446e4125 | 1062 | case V4L2_CID_DEINTERLACING_MODE: |
aec330a8 | 1063 | case V4L2_CID_TUNE_DEEMPHASIS: |
bc9028e1 | 1064 | case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: |
a77b4fc0 | 1065 | case V4L2_CID_DETECT_MD_MODE: |
0996517c HV |
1066 | *type = V4L2_CTRL_TYPE_MENU; |
1067 | break; | |
c643ee13 SA |
1068 | case V4L2_CID_LINK_FREQ: |
1069 | *type = V4L2_CTRL_TYPE_INTEGER_MENU; | |
1070 | break; | |
0996517c HV |
1071 | case V4L2_CID_RDS_TX_PS_NAME: |
1072 | case V4L2_CID_RDS_TX_RADIO_TEXT: | |
9570a148 HV |
1073 | case V4L2_CID_RDS_RX_PS_NAME: |
1074 | case V4L2_CID_RDS_RX_RADIO_TEXT: | |
0996517c HV |
1075 | *type = V4L2_CTRL_TYPE_STRING; |
1076 | break; | |
7f84ad8b | 1077 | case V4L2_CID_ISO_SENSITIVITY: |
d58083c9 | 1078 | case V4L2_CID_AUTO_EXPOSURE_BIAS: |
bc9028e1 AK |
1079 | case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: |
1080 | case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: | |
d58083c9 SN |
1081 | *type = V4L2_CTRL_TYPE_INTEGER_MENU; |
1082 | break; | |
0996517c HV |
1083 | case V4L2_CID_USER_CLASS: |
1084 | case V4L2_CID_CAMERA_CLASS: | |
1085 | case V4L2_CID_MPEG_CLASS: | |
1086 | case V4L2_CID_FM_TX_CLASS: | |
0b159acd | 1087 | case V4L2_CID_FLASH_CLASS: |
c7361ae1 | 1088 | case V4L2_CID_JPEG_CLASS: |
8c9d236e | 1089 | case V4L2_CID_IMAGE_SOURCE_CLASS: |
c643ee13 | 1090 | case V4L2_CID_IMAGE_PROC_CLASS: |
977ebec7 | 1091 | case V4L2_CID_DV_CLASS: |
aec330a8 | 1092 | case V4L2_CID_FM_RX_CLASS: |
80807fad | 1093 | case V4L2_CID_RF_TUNER_CLASS: |
a77b4fc0 | 1094 | case V4L2_CID_DETECT_CLASS: |
0996517c HV |
1095 | *type = V4L2_CTRL_TYPE_CTRL_CLASS; |
1096 | /* You can neither read not write these */ | |
1097 | *flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY; | |
1098 | *min = *max = *step = *def = 0; | |
1099 | break; | |
1100 | case V4L2_CID_BG_COLOR: | |
1101 | *type = V4L2_CTRL_TYPE_INTEGER; | |
1102 | *step = 1; | |
1103 | *min = 0; | |
1104 | /* Max is calculated as RGB888 that is 2^24 */ | |
1105 | *max = 0xFFFFFF; | |
1106 | break; | |
0b159acd | 1107 | case V4L2_CID_FLASH_FAULT: |
c7361ae1 | 1108 | case V4L2_CID_JPEG_ACTIVE_MARKER: |
fc162a09 | 1109 | case V4L2_CID_3A_LOCK: |
2272ab65 | 1110 | case V4L2_CID_AUTO_FOCUS_STATUS: |
977ebec7 HV |
1111 | case V4L2_CID_DV_TX_HOTPLUG: |
1112 | case V4L2_CID_DV_TX_RXSENSE: | |
1113 | case V4L2_CID_DV_TX_EDID_PRESENT: | |
1114 | case V4L2_CID_DV_RX_POWER_PRESENT: | |
0b159acd SA |
1115 | *type = V4L2_CTRL_TYPE_BITMASK; |
1116 | break; | |
064f5096 KD |
1117 | case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: |
1118 | case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: | |
1119 | *type = V4L2_CTRL_TYPE_INTEGER; | |
1120 | *flags |= V4L2_CTRL_FLAG_READ_ONLY; | |
1121 | break; | |
24c19a21 | 1122 | case V4L2_CID_MPEG_VIDEO_DEC_PTS: |
0ba2aeb6 HV |
1123 | *type = V4L2_CTRL_TYPE_INTEGER64; |
1124 | *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY; | |
1125 | *min = *def = 0; | |
1126 | *max = 0x1ffffffffLL; | |
1127 | *step = 1; | |
1128 | break; | |
1129 | case V4L2_CID_MPEG_VIDEO_DEC_FRAME: | |
1130 | *type = V4L2_CTRL_TYPE_INTEGER64; | |
1131 | *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY; | |
1132 | *min = *def = 0; | |
1133 | *max = 0x7fffffffffffffffLL; | |
1134 | *step = 1; | |
1135 | break; | |
c643ee13 | 1136 | case V4L2_CID_PIXEL_RATE: |
24c19a21 | 1137 | *type = V4L2_CTRL_TYPE_INTEGER64; |
c643ee13 | 1138 | *flags |= V4L2_CTRL_FLAG_READ_ONLY; |
24c19a21 | 1139 | break; |
a77b4fc0 HV |
1140 | case V4L2_CID_DETECT_MD_REGION_GRID: |
1141 | *type = V4L2_CTRL_TYPE_U8; | |
1142 | break; | |
1143 | case V4L2_CID_DETECT_MD_THRESHOLD_GRID: | |
1144 | *type = V4L2_CTRL_TYPE_U16; | |
1145 | break; | |
811c5081 HV |
1146 | case V4L2_CID_RDS_TX_ALT_FREQS: |
1147 | *type = V4L2_CTRL_TYPE_U32; | |
1148 | break; | |
0996517c HV |
1149 | default: |
1150 | *type = V4L2_CTRL_TYPE_INTEGER; | |
1151 | break; | |
1152 | } | |
1153 | switch (id) { | |
1154 | case V4L2_CID_MPEG_AUDIO_ENCODING: | |
1155 | case V4L2_CID_MPEG_AUDIO_MODE: | |
1156 | case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: | |
1157 | case V4L2_CID_MPEG_VIDEO_B_FRAMES: | |
1158 | case V4L2_CID_MPEG_STREAM_TYPE: | |
1159 | *flags |= V4L2_CTRL_FLAG_UPDATE; | |
1160 | break; | |
1161 | case V4L2_CID_AUDIO_VOLUME: | |
1162 | case V4L2_CID_AUDIO_BALANCE: | |
1163 | case V4L2_CID_AUDIO_BASS: | |
1164 | case V4L2_CID_AUDIO_TREBLE: | |
1165 | case V4L2_CID_BRIGHTNESS: | |
1166 | case V4L2_CID_CONTRAST: | |
1167 | case V4L2_CID_SATURATION: | |
1168 | case V4L2_CID_HUE: | |
1169 | case V4L2_CID_RED_BALANCE: | |
1170 | case V4L2_CID_BLUE_BALANCE: | |
1171 | case V4L2_CID_GAMMA: | |
1172 | case V4L2_CID_SHARPNESS: | |
1173 | case V4L2_CID_CHROMA_GAIN: | |
1174 | case V4L2_CID_RDS_TX_DEVIATION: | |
1175 | case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: | |
1176 | case V4L2_CID_AUDIO_LIMITER_DEVIATION: | |
1177 | case V4L2_CID_AUDIO_COMPRESSION_GAIN: | |
1178 | case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: | |
1179 | case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: | |
1180 | case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: | |
1181 | case V4L2_CID_PILOT_TONE_DEVIATION: | |
1182 | case V4L2_CID_PILOT_TONE_FREQUENCY: | |
1183 | case V4L2_CID_TUNE_POWER_LEVEL: | |
1184 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: | |
41018cb8 | 1185 | case V4L2_CID_RF_TUNER_RF_GAIN: |
80807fad AP |
1186 | case V4L2_CID_RF_TUNER_LNA_GAIN: |
1187 | case V4L2_CID_RF_TUNER_MIXER_GAIN: | |
1188 | case V4L2_CID_RF_TUNER_IF_GAIN: | |
3ce569fd | 1189 | case V4L2_CID_RF_TUNER_BANDWIDTH: |
a77b4fc0 | 1190 | case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: |
0996517c HV |
1191 | *flags |= V4L2_CTRL_FLAG_SLIDER; |
1192 | break; | |
1193 | case V4L2_CID_PAN_RELATIVE: | |
1194 | case V4L2_CID_TILT_RELATIVE: | |
1195 | case V4L2_CID_FOCUS_RELATIVE: | |
1196 | case V4L2_CID_IRIS_RELATIVE: | |
1197 | case V4L2_CID_ZOOM_RELATIVE: | |
ef66c0ca RRD |
1198 | *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | |
1199 | V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; | |
0996517c | 1200 | break; |
0b159acd | 1201 | case V4L2_CID_FLASH_STROBE_STATUS: |
2272ab65 | 1202 | case V4L2_CID_AUTO_FOCUS_STATUS: |
0b159acd | 1203 | case V4L2_CID_FLASH_READY: |
977ebec7 HV |
1204 | case V4L2_CID_DV_TX_HOTPLUG: |
1205 | case V4L2_CID_DV_TX_RXSENSE: | |
1206 | case V4L2_CID_DV_TX_EDID_PRESENT: | |
1207 | case V4L2_CID_DV_RX_POWER_PRESENT: | |
45cc29af | 1208 | case V4L2_CID_DV_RX_IT_CONTENT_TYPE: |
9570a148 HV |
1209 | case V4L2_CID_RDS_RX_PTY: |
1210 | case V4L2_CID_RDS_RX_PS_NAME: | |
1211 | case V4L2_CID_RDS_RX_RADIO_TEXT: | |
1212 | case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: | |
1213 | case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: | |
1214 | case V4L2_CID_RDS_RX_MUSIC_SPEECH: | |
0b159acd SA |
1215 | *flags |= V4L2_CTRL_FLAG_READ_ONLY; |
1216 | break; | |
9aa4357e AP |
1217 | case V4L2_CID_RF_TUNER_PLL_LOCK: |
1218 | *flags |= V4L2_CTRL_FLAG_VOLATILE; | |
1219 | break; | |
0996517c HV |
1220 | } |
1221 | } | |
1222 | EXPORT_SYMBOL(v4l2_ctrl_fill); | |
1223 | ||
6e239399 HV |
1224 | static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes) |
1225 | { | |
1226 | memset(ev->reserved, 0, sizeof(ev->reserved)); | |
1227 | ev->type = V4L2_EVENT_CTRL; | |
1228 | ev->id = ctrl->id; | |
1229 | ev->u.ctrl.changes = changes; | |
1230 | ev->u.ctrl.type = ctrl->type; | |
1231 | ev->u.ctrl.flags = ctrl->flags; | |
d9a25471 | 1232 | if (ctrl->is_ptr) |
6e239399 HV |
1233 | ev->u.ctrl.value64 = 0; |
1234 | else | |
2a9ec373 | 1235 | ev->u.ctrl.value64 = *ctrl->p_cur.p_s64; |
6e239399 HV |
1236 | ev->u.ctrl.minimum = ctrl->minimum; |
1237 | ev->u.ctrl.maximum = ctrl->maximum; | |
ce580fe5 SA |
1238 | if (ctrl->type == V4L2_CTRL_TYPE_MENU |
1239 | || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) | |
6e239399 HV |
1240 | ev->u.ctrl.step = 1; |
1241 | else | |
1242 | ev->u.ctrl.step = ctrl->step; | |
1243 | ev->u.ctrl.default_value = ctrl->default_value; | |
1244 | } | |
1245 | ||
1246 | static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes) | |
1247 | { | |
1248 | struct v4l2_event ev; | |
77068d36 | 1249 | struct v4l2_subscribed_event *sev; |
6e239399 | 1250 | |
77068d36 | 1251 | if (list_empty(&ctrl->ev_subs)) |
3f66f0ed | 1252 | return; |
6e239399 HV |
1253 | fill_event(&ev, ctrl, changes); |
1254 | ||
77068d36 | 1255 | list_for_each_entry(sev, &ctrl->ev_subs, node) |
e3e72f39 HG |
1256 | if (sev->fh != fh || |
1257 | (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK)) | |
77068d36 | 1258 | v4l2_event_queue_fh(sev->fh, &ev); |
6e239399 HV |
1259 | } |
1260 | ||
998e7659 | 1261 | static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx, |
0176077a HV |
1262 | union v4l2_ctrl_ptr ptr1, |
1263 | union v4l2_ctrl_ptr ptr2) | |
1264 | { | |
1265 | switch (ctrl->type) { | |
1266 | case V4L2_CTRL_TYPE_BUTTON: | |
1267 | return false; | |
1268 | case V4L2_CTRL_TYPE_STRING: | |
265c7f8a | 1269 | idx *= ctrl->elem_size; |
0176077a | 1270 | /* strings are always 0-terminated */ |
265c7f8a | 1271 | return !strcmp(ptr1.p_char + idx, ptr2.p_char + idx); |
0176077a | 1272 | case V4L2_CTRL_TYPE_INTEGER64: |
265c7f8a | 1273 | return ptr1.p_s64[idx] == ptr2.p_s64[idx]; |
dda4a4d5 HV |
1274 | case V4L2_CTRL_TYPE_U8: |
1275 | return ptr1.p_u8[idx] == ptr2.p_u8[idx]; | |
1276 | case V4L2_CTRL_TYPE_U16: | |
1277 | return ptr1.p_u16[idx] == ptr2.p_u16[idx]; | |
811c5081 HV |
1278 | case V4L2_CTRL_TYPE_U32: |
1279 | return ptr1.p_u32[idx] == ptr2.p_u32[idx]; | |
0176077a | 1280 | default: |
265c7f8a HV |
1281 | if (ctrl->is_int) |
1282 | return ptr1.p_s32[idx] == ptr2.p_s32[idx]; | |
1283 | idx *= ctrl->elem_size; | |
1284 | return !memcmp(ptr1.p + idx, ptr2.p + idx, ctrl->elem_size); | |
0176077a HV |
1285 | } |
1286 | } | |
1287 | ||
998e7659 | 1288 | static void std_init(const struct v4l2_ctrl *ctrl, u32 idx, |
0176077a HV |
1289 | union v4l2_ctrl_ptr ptr) |
1290 | { | |
1291 | switch (ctrl->type) { | |
1292 | case V4L2_CTRL_TYPE_STRING: | |
265c7f8a HV |
1293 | idx *= ctrl->elem_size; |
1294 | memset(ptr.p_char + idx, ' ', ctrl->minimum); | |
1295 | ptr.p_char[idx + ctrl->minimum] = '\0'; | |
0176077a HV |
1296 | break; |
1297 | case V4L2_CTRL_TYPE_INTEGER64: | |
265c7f8a | 1298 | ptr.p_s64[idx] = ctrl->default_value; |
0176077a HV |
1299 | break; |
1300 | case V4L2_CTRL_TYPE_INTEGER: | |
1301 | case V4L2_CTRL_TYPE_INTEGER_MENU: | |
1302 | case V4L2_CTRL_TYPE_MENU: | |
1303 | case V4L2_CTRL_TYPE_BITMASK: | |
1304 | case V4L2_CTRL_TYPE_BOOLEAN: | |
265c7f8a | 1305 | ptr.p_s32[idx] = ctrl->default_value; |
0176077a | 1306 | break; |
dda4a4d5 HV |
1307 | case V4L2_CTRL_TYPE_U8: |
1308 | ptr.p_u8[idx] = ctrl->default_value; | |
1309 | break; | |
1310 | case V4L2_CTRL_TYPE_U16: | |
1311 | ptr.p_u16[idx] = ctrl->default_value; | |
1312 | break; | |
811c5081 HV |
1313 | case V4L2_CTRL_TYPE_U32: |
1314 | ptr.p_u32[idx] = ctrl->default_value; | |
1315 | break; | |
0176077a | 1316 | default: |
302ab7ce HV |
1317 | idx *= ctrl->elem_size; |
1318 | memset(ptr.p + idx, 0, ctrl->elem_size); | |
0176077a HV |
1319 | break; |
1320 | } | |
1321 | } | |
1322 | ||
1323 | static void std_log(const struct v4l2_ctrl *ctrl) | |
1324 | { | |
1325 | union v4l2_ctrl_ptr ptr = ctrl->p_cur; | |
1326 | ||
998e7659 HV |
1327 | if (ctrl->is_array) { |
1328 | unsigned i; | |
1329 | ||
1330 | for (i = 0; i < ctrl->nr_of_dims; i++) | |
1331 | pr_cont("[%u]", ctrl->dims[i]); | |
1332 | pr_cont(" "); | |
1333 | } | |
1334 | ||
0176077a HV |
1335 | switch (ctrl->type) { |
1336 | case V4L2_CTRL_TYPE_INTEGER: | |
1337 | pr_cont("%d", *ptr.p_s32); | |
1338 | break; | |
1339 | case V4L2_CTRL_TYPE_BOOLEAN: | |
1340 | pr_cont("%s", *ptr.p_s32 ? "true" : "false"); | |
1341 | break; | |
1342 | case V4L2_CTRL_TYPE_MENU: | |
1343 | pr_cont("%s", ctrl->qmenu[*ptr.p_s32]); | |
1344 | break; | |
1345 | case V4L2_CTRL_TYPE_INTEGER_MENU: | |
1346 | pr_cont("%lld", ctrl->qmenu_int[*ptr.p_s32]); | |
1347 | break; | |
1348 | case V4L2_CTRL_TYPE_BITMASK: | |
1349 | pr_cont("0x%08x", *ptr.p_s32); | |
1350 | break; | |
1351 | case V4L2_CTRL_TYPE_INTEGER64: | |
1352 | pr_cont("%lld", *ptr.p_s64); | |
1353 | break; | |
1354 | case V4L2_CTRL_TYPE_STRING: | |
1355 | pr_cont("%s", ptr.p_char); | |
1356 | break; | |
dda4a4d5 HV |
1357 | case V4L2_CTRL_TYPE_U8: |
1358 | pr_cont("%u", (unsigned)*ptr.p_u8); | |
1359 | break; | |
1360 | case V4L2_CTRL_TYPE_U16: | |
1361 | pr_cont("%u", (unsigned)*ptr.p_u16); | |
1362 | break; | |
811c5081 HV |
1363 | case V4L2_CTRL_TYPE_U32: |
1364 | pr_cont("%u", (unsigned)*ptr.p_u32); | |
1365 | break; | |
0176077a HV |
1366 | default: |
1367 | pr_cont("unknown type %d", ctrl->type); | |
1368 | break; | |
1369 | } | |
1370 | } | |
1371 | ||
958c7c7e HV |
1372 | /* |
1373 | * Round towards the closest legal value. Be careful when we are | |
1374 | * close to the maximum range of the control type to prevent | |
1375 | * wrap-arounds. | |
1376 | */ | |
0176077a HV |
1377 | #define ROUND_TO_RANGE(val, offset_type, ctrl) \ |
1378 | ({ \ | |
1379 | offset_type offset; \ | |
958c7c7e | 1380 | if ((ctrl)->maximum >= 0 && \ |
9c9cb1fa | 1381 | val >= (ctrl)->maximum - (s32)((ctrl)->step / 2)) \ |
958c7c7e HV |
1382 | val = (ctrl)->maximum; \ |
1383 | else \ | |
9c9cb1fa | 1384 | val += (s32)((ctrl)->step / 2); \ |
0176077a HV |
1385 | val = clamp_t(typeof(val), val, \ |
1386 | (ctrl)->minimum, (ctrl)->maximum); \ | |
1387 | offset = (val) - (ctrl)->minimum; \ | |
9c9cb1fa | 1388 | offset = (ctrl)->step * (offset / (u32)(ctrl)->step); \ |
0176077a HV |
1389 | val = (ctrl)->minimum + offset; \ |
1390 | 0; \ | |
1391 | }) | |
1392 | ||
1393 | /* Validate a new control */ | |
998e7659 | 1394 | static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx, |
0176077a HV |
1395 | union v4l2_ctrl_ptr ptr) |
1396 | { | |
1397 | size_t len; | |
0d5e8c43 HV |
1398 | u64 offset; |
1399 | s64 val; | |
0176077a HV |
1400 | |
1401 | switch (ctrl->type) { | |
1402 | case V4L2_CTRL_TYPE_INTEGER: | |
265c7f8a | 1403 | return ROUND_TO_RANGE(ptr.p_s32[idx], u32, ctrl); |
0176077a | 1404 | case V4L2_CTRL_TYPE_INTEGER64: |
0d5e8c43 HV |
1405 | /* |
1406 | * We can't use the ROUND_TO_RANGE define here due to | |
1407 | * the u64 divide that needs special care. | |
1408 | */ | |
1409 | val = ptr.p_s64[idx]; | |
9c9cb1fa | 1410 | if (ctrl->maximum >= 0 && val >= ctrl->maximum - (s64)(ctrl->step / 2)) |
958c7c7e HV |
1411 | val = ctrl->maximum; |
1412 | else | |
9c9cb1fa | 1413 | val += (s64)(ctrl->step / 2); |
0d5e8c43 HV |
1414 | val = clamp_t(s64, val, ctrl->minimum, ctrl->maximum); |
1415 | offset = val - ctrl->minimum; | |
1416 | do_div(offset, ctrl->step); | |
1417 | ptr.p_s64[idx] = ctrl->minimum + offset * ctrl->step; | |
1418 | return 0; | |
dda4a4d5 HV |
1419 | case V4L2_CTRL_TYPE_U8: |
1420 | return ROUND_TO_RANGE(ptr.p_u8[idx], u8, ctrl); | |
1421 | case V4L2_CTRL_TYPE_U16: | |
1422 | return ROUND_TO_RANGE(ptr.p_u16[idx], u16, ctrl); | |
811c5081 HV |
1423 | case V4L2_CTRL_TYPE_U32: |
1424 | return ROUND_TO_RANGE(ptr.p_u32[idx], u32, ctrl); | |
0176077a HV |
1425 | |
1426 | case V4L2_CTRL_TYPE_BOOLEAN: | |
265c7f8a | 1427 | ptr.p_s32[idx] = !!ptr.p_s32[idx]; |
0176077a HV |
1428 | return 0; |
1429 | ||
1430 | case V4L2_CTRL_TYPE_MENU: | |
1431 | case V4L2_CTRL_TYPE_INTEGER_MENU: | |
265c7f8a | 1432 | if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum) |
0176077a | 1433 | return -ERANGE; |
265c7f8a | 1434 | if (ctrl->menu_skip_mask & (1 << ptr.p_s32[idx])) |
0176077a HV |
1435 | return -EINVAL; |
1436 | if (ctrl->type == V4L2_CTRL_TYPE_MENU && | |
265c7f8a | 1437 | ctrl->qmenu[ptr.p_s32[idx]][0] == '\0') |
0176077a HV |
1438 | return -EINVAL; |
1439 | return 0; | |
1440 | ||
1441 | case V4L2_CTRL_TYPE_BITMASK: | |
265c7f8a | 1442 | ptr.p_s32[idx] &= ctrl->maximum; |
0176077a HV |
1443 | return 0; |
1444 | ||
1445 | case V4L2_CTRL_TYPE_BUTTON: | |
1446 | case V4L2_CTRL_TYPE_CTRL_CLASS: | |
265c7f8a | 1447 | ptr.p_s32[idx] = 0; |
0176077a HV |
1448 | return 0; |
1449 | ||
1450 | case V4L2_CTRL_TYPE_STRING: | |
265c7f8a HV |
1451 | idx *= ctrl->elem_size; |
1452 | len = strlen(ptr.p_char + idx); | |
0176077a HV |
1453 | if (len < ctrl->minimum) |
1454 | return -ERANGE; | |
0d5e8c43 | 1455 | if ((len - (u32)ctrl->minimum) % (u32)ctrl->step) |
0176077a HV |
1456 | return -ERANGE; |
1457 | return 0; | |
1458 | ||
1459 | default: | |
1460 | return -EINVAL; | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | static const struct v4l2_ctrl_type_ops std_type_ops = { | |
1465 | .equal = std_equal, | |
1466 | .init = std_init, | |
1467 | .log = std_log, | |
1468 | .validate = std_validate, | |
1469 | }; | |
1470 | ||
000e4f9a HV |
1471 | /* Helper function: copy the given control value back to the caller */ |
1472 | static int ptr_to_user(struct v4l2_ext_control *c, | |
1473 | struct v4l2_ctrl *ctrl, | |
1474 | union v4l2_ctrl_ptr ptr) | |
0996517c HV |
1475 | { |
1476 | u32 len; | |
1477 | ||
d9a25471 | 1478 | if (ctrl->is_ptr && !ctrl->is_string) |
40265bbe HV |
1479 | return copy_to_user(c->ptr, ptr.p, c->size) ? |
1480 | -EFAULT : 0; | |
d9a25471 | 1481 | |
0996517c HV |
1482 | switch (ctrl->type) { |
1483 | case V4L2_CTRL_TYPE_STRING: | |
000e4f9a | 1484 | len = strlen(ptr.p_char); |
0996517c | 1485 | if (c->size < len + 1) { |
c336f75e | 1486 | c->size = ctrl->elem_size; |
0996517c HV |
1487 | return -ENOSPC; |
1488 | } | |
000e4f9a | 1489 | return copy_to_user(c->string, ptr.p_char, len + 1) ? |
40265bbe | 1490 | -EFAULT : 0; |
0996517c | 1491 | case V4L2_CTRL_TYPE_INTEGER64: |
000e4f9a | 1492 | c->value64 = *ptr.p_s64; |
0996517c HV |
1493 | break; |
1494 | default: | |
000e4f9a | 1495 | c->value = *ptr.p_s32; |
0996517c HV |
1496 | break; |
1497 | } | |
1498 | return 0; | |
1499 | } | |
1500 | ||
000e4f9a HV |
1501 | /* Helper function: copy the current control value back to the caller */ |
1502 | static int cur_to_user(struct v4l2_ext_control *c, | |
0996517c | 1503 | struct v4l2_ctrl *ctrl) |
000e4f9a HV |
1504 | { |
1505 | return ptr_to_user(c, ctrl, ctrl->p_cur); | |
1506 | } | |
1507 | ||
1508 | /* Helper function: copy the new control value back to the caller */ | |
1509 | static int new_to_user(struct v4l2_ext_control *c, | |
1510 | struct v4l2_ctrl *ctrl) | |
1511 | { | |
1512 | return ptr_to_user(c, ctrl, ctrl->p_new); | |
1513 | } | |
1514 | ||
953eae5d RRD |
1515 | /* Helper function: copy the initial control value back to the caller */ |
1516 | static int def_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl) | |
1517 | { | |
1518 | int idx; | |
1519 | ||
1520 | for (idx = 0; idx < ctrl->elems; idx++) | |
1521 | ctrl->type_ops->init(ctrl, idx, ctrl->p_new); | |
1522 | ||
1523 | return ptr_to_user(c, ctrl, ctrl->p_new); | |
1524 | } | |
1525 | ||
000e4f9a HV |
1526 | /* Helper function: copy the caller-provider value to the given control value */ |
1527 | static int user_to_ptr(struct v4l2_ext_control *c, | |
1528 | struct v4l2_ctrl *ctrl, | |
1529 | union v4l2_ctrl_ptr ptr) | |
0996517c HV |
1530 | { |
1531 | int ret; | |
1532 | u32 size; | |
1533 | ||
2a863793 | 1534 | ctrl->is_new = 1; |
302ab7ce HV |
1535 | if (ctrl->is_ptr && !ctrl->is_string) { |
1536 | unsigned idx; | |
1537 | ||
40265bbe | 1538 | ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0; |
302ab7ce HV |
1539 | if (ret || !ctrl->is_array) |
1540 | return ret; | |
1541 | for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++) | |
1542 | ctrl->type_ops->init(ctrl, idx, ptr); | |
1543 | return 0; | |
1544 | } | |
d9a25471 | 1545 | |
0996517c HV |
1546 | switch (ctrl->type) { |
1547 | case V4L2_CTRL_TYPE_INTEGER64: | |
000e4f9a | 1548 | *ptr.p_s64 = c->value64; |
0996517c HV |
1549 | break; |
1550 | case V4L2_CTRL_TYPE_STRING: | |
1551 | size = c->size; | |
1552 | if (size == 0) | |
1553 | return -ERANGE; | |
1554 | if (size > ctrl->maximum + 1) | |
1555 | size = ctrl->maximum + 1; | |
40265bbe | 1556 | ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0; |
0996517c | 1557 | if (!ret) { |
000e4f9a | 1558 | char last = ptr.p_char[size - 1]; |
0996517c | 1559 | |
000e4f9a | 1560 | ptr.p_char[size - 1] = 0; |
0996517c HV |
1561 | /* If the string was longer than ctrl->maximum, |
1562 | then return an error. */ | |
000e4f9a | 1563 | if (strlen(ptr.p_char) == ctrl->maximum && last) |
0996517c HV |
1564 | return -ERANGE; |
1565 | } | |
40265bbe | 1566 | return ret; |
0996517c | 1567 | default: |
000e4f9a | 1568 | *ptr.p_s32 = c->value; |
0996517c HV |
1569 | break; |
1570 | } | |
1571 | return 0; | |
1572 | } | |
1573 | ||
000e4f9a HV |
1574 | /* Helper function: copy the caller-provider value as the new control value */ |
1575 | static int user_to_new(struct v4l2_ext_control *c, | |
0996517c HV |
1576 | struct v4l2_ctrl *ctrl) |
1577 | { | |
000e4f9a HV |
1578 | return user_to_ptr(c, ctrl, ctrl->p_new); |
1579 | } | |
d9a25471 | 1580 | |
000e4f9a HV |
1581 | /* Copy the one value to another. */ |
1582 | static void ptr_to_ptr(struct v4l2_ctrl *ctrl, | |
1583 | union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to) | |
1584 | { | |
1585 | if (ctrl == NULL) | |
1586 | return; | |
302ab7ce | 1587 | memcpy(to.p, from.p, ctrl->elems * ctrl->elem_size); |
0996517c HV |
1588 | } |
1589 | ||
1590 | /* Copy the new value to the current value. */ | |
2ccbe779 | 1591 | static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags) |
0996517c | 1592 | { |
000e4f9a | 1593 | bool changed; |
6e239399 | 1594 | |
0996517c HV |
1595 | if (ctrl == NULL) |
1596 | return; | |
9ea1b7a4 HV |
1597 | |
1598 | /* has_changed is set by cluster_changed */ | |
1599 | changed = ctrl->has_changed; | |
1600 | if (changed) | |
1601 | ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur); | |
d9a25471 | 1602 | |
2ccbe779 SN |
1603 | if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) { |
1604 | /* Note: CH_FLAGS is only set for auto clusters. */ | |
5626b8c7 HV |
1605 | ctrl->flags &= |
1606 | ~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE); | |
1607 | if (!is_cur_manual(ctrl->cluster[0])) { | |
72d877ca | 1608 | ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; |
5626b8c7 HV |
1609 | if (ctrl->cluster[0]->has_volatiles) |
1610 | ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; | |
1611 | } | |
1249a3a8 | 1612 | fh = NULL; |
72d877ca | 1613 | } |
2ccbe779 | 1614 | if (changed || ch_flags) { |
639884a6 HV |
1615 | /* If a control was changed that was not one of the controls |
1616 | modified by the application, then send the event to all. */ | |
1617 | if (!ctrl->is_new) | |
1618 | fh = NULL; | |
6e239399 | 1619 | send_event(fh, ctrl, |
2ccbe779 | 1620 | (changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags); |
8ac7a949 HV |
1621 | if (ctrl->call_notify && changed && ctrl->handler->notify) |
1622 | ctrl->handler->notify(ctrl, ctrl->handler->notify_priv); | |
639884a6 | 1623 | } |
0996517c HV |
1624 | } |
1625 | ||
1626 | /* Copy the current value to the new value */ | |
1627 | static void cur_to_new(struct v4l2_ctrl *ctrl) | |
1628 | { | |
1629 | if (ctrl == NULL) | |
1630 | return; | |
000e4f9a | 1631 | ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new); |
0996517c HV |
1632 | } |
1633 | ||
1634 | /* Return non-zero if one or more of the controls in the cluster has a new | |
1635 | value that differs from the current value. */ | |
1636 | static int cluster_changed(struct v4l2_ctrl *master) | |
1637 | { | |
9ea1b7a4 | 1638 | bool changed = false; |
302ab7ce | 1639 | unsigned idx; |
0996517c HV |
1640 | int i; |
1641 | ||
9ea1b7a4 | 1642 | for (i = 0; i < master->ncontrols; i++) { |
0996517c | 1643 | struct v4l2_ctrl *ctrl = master->cluster[i]; |
302ab7ce | 1644 | bool ctrl_changed = false; |
0996517c HV |
1645 | |
1646 | if (ctrl == NULL) | |
1647 | continue; | |
45f014c5 RRD |
1648 | |
1649 | if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE) | |
1650 | changed = ctrl_changed = true; | |
1651 | ||
b08d8d26 RRD |
1652 | /* |
1653 | * Set has_changed to false to avoid generating | |
1654 | * the event V4L2_EVENT_CTRL_CH_VALUE | |
1655 | */ | |
1656 | if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { | |
1657 | ctrl->has_changed = false; | |
1658 | continue; | |
1659 | } | |
1660 | ||
302ab7ce HV |
1661 | for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) |
1662 | ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, | |
998e7659 | 1663 | ctrl->p_cur, ctrl->p_new); |
302ab7ce | 1664 | ctrl->has_changed = ctrl_changed; |
9ea1b7a4 | 1665 | changed |= ctrl->has_changed; |
0996517c | 1666 | } |
9ea1b7a4 | 1667 | return changed; |
0996517c HV |
1668 | } |
1669 | ||
2ccbe779 SN |
1670 | /* Control range checking */ |
1671 | static int check_range(enum v4l2_ctrl_type type, | |
0ba2aeb6 | 1672 | s64 min, s64 max, u64 step, s64 def) |
2ccbe779 SN |
1673 | { |
1674 | switch (type) { | |
1675 | case V4L2_CTRL_TYPE_BOOLEAN: | |
1676 | if (step != 1 || max > 1 || min < 0) | |
1677 | return -ERANGE; | |
1678 | /* fall through */ | |
dda4a4d5 HV |
1679 | case V4L2_CTRL_TYPE_U8: |
1680 | case V4L2_CTRL_TYPE_U16: | |
811c5081 | 1681 | case V4L2_CTRL_TYPE_U32: |
2ccbe779 | 1682 | case V4L2_CTRL_TYPE_INTEGER: |
0ba2aeb6 HV |
1683 | case V4L2_CTRL_TYPE_INTEGER64: |
1684 | if (step == 0 || min > max || def < min || def > max) | |
2ccbe779 SN |
1685 | return -ERANGE; |
1686 | return 0; | |
1687 | case V4L2_CTRL_TYPE_BITMASK: | |
1688 | if (step || min || !max || (def & ~max)) | |
1689 | return -ERANGE; | |
1690 | return 0; | |
1691 | case V4L2_CTRL_TYPE_MENU: | |
1692 | case V4L2_CTRL_TYPE_INTEGER_MENU: | |
1693 | if (min > max || def < min || def > max) | |
1694 | return -ERANGE; | |
1695 | /* Note: step == menu_skip_mask for menu controls. | |
1696 | So here we check if the default value is masked out. */ | |
1697 | if (step && ((1 << def) & step)) | |
1698 | return -EINVAL; | |
1699 | return 0; | |
1700 | case V4L2_CTRL_TYPE_STRING: | |
1701 | if (min > max || min < 0 || step < 1 || def) | |
1702 | return -ERANGE; | |
1703 | return 0; | |
1704 | default: | |
1705 | return 0; | |
1706 | } | |
1707 | } | |
1708 | ||
03d5285b | 1709 | /* Validate a new control */ |
7a7f1ab3 | 1710 | static int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new) |
0996517c | 1711 | { |
302ab7ce HV |
1712 | unsigned idx; |
1713 | int err = 0; | |
1714 | ||
7a7f1ab3 HV |
1715 | for (idx = 0; !err && idx < ctrl->elems; idx++) |
1716 | err = ctrl->type_ops->validate(ctrl, idx, p_new); | |
302ab7ce | 1717 | return err; |
0996517c HV |
1718 | } |
1719 | ||
1720 | static inline u32 node2id(struct list_head *node) | |
1721 | { | |
1722 | return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id; | |
1723 | } | |
1724 | ||
1725 | /* Set the handler's error code if it wasn't set earlier already */ | |
1726 | static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err) | |
1727 | { | |
1728 | if (hdl->error == 0) | |
1729 | hdl->error = err; | |
1730 | return err; | |
1731 | } | |
1732 | ||
1733 | /* Initialize the handler */ | |
6cd247ef AW |
1734 | int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl, |
1735 | unsigned nr_of_controls_hint, | |
1736 | struct lock_class_key *key, const char *name) | |
0996517c | 1737 | { |
77e7c4e6 SA |
1738 | hdl->lock = &hdl->_lock; |
1739 | mutex_init(hdl->lock); | |
6cd247ef | 1740 | lockdep_set_class_and_name(hdl->lock, key, name); |
0996517c HV |
1741 | INIT_LIST_HEAD(&hdl->ctrls); |
1742 | INIT_LIST_HEAD(&hdl->ctrl_refs); | |
1743 | hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8; | |
9884d7be TM |
1744 | hdl->buckets = kcalloc(hdl->nr_of_buckets, sizeof(hdl->buckets[0]), |
1745 | GFP_KERNEL); | |
0996517c HV |
1746 | hdl->error = hdl->buckets ? 0 : -ENOMEM; |
1747 | return hdl->error; | |
1748 | } | |
6cd247ef | 1749 | EXPORT_SYMBOL(v4l2_ctrl_handler_init_class); |
0996517c HV |
1750 | |
1751 | /* Free all controls and control refs */ | |
1752 | void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl) | |
1753 | { | |
1754 | struct v4l2_ctrl_ref *ref, *next_ref; | |
1755 | struct v4l2_ctrl *ctrl, *next_ctrl; | |
77068d36 | 1756 | struct v4l2_subscribed_event *sev, *next_sev; |
0996517c HV |
1757 | |
1758 | if (hdl == NULL || hdl->buckets == NULL) | |
1759 | return; | |
1760 | ||
77e7c4e6 | 1761 | mutex_lock(hdl->lock); |
0996517c HV |
1762 | /* Free all nodes */ |
1763 | list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) { | |
1764 | list_del(&ref->node); | |
1765 | kfree(ref); | |
1766 | } | |
1767 | /* Free all controls owned by the handler */ | |
1768 | list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) { | |
1769 | list_del(&ctrl->node); | |
77068d36 HV |
1770 | list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node) |
1771 | list_del(&sev->node); | |
0996517c HV |
1772 | kfree(ctrl); |
1773 | } | |
1774 | kfree(hdl->buckets); | |
1775 | hdl->buckets = NULL; | |
1776 | hdl->cached = NULL; | |
1777 | hdl->error = 0; | |
77e7c4e6 | 1778 | mutex_unlock(hdl->lock); |
0996517c HV |
1779 | } |
1780 | EXPORT_SYMBOL(v4l2_ctrl_handler_free); | |
1781 | ||
1782 | /* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer | |
1783 | be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing | |
1784 | with applications that do not use the NEXT_CTRL flag. | |
1785 | ||
1786 | We just find the n-th private user control. It's O(N), but that should not | |
1787 | be an issue in this particular case. */ | |
1788 | static struct v4l2_ctrl_ref *find_private_ref( | |
1789 | struct v4l2_ctrl_handler *hdl, u32 id) | |
1790 | { | |
1791 | struct v4l2_ctrl_ref *ref; | |
1792 | ||
1793 | id -= V4L2_CID_PRIVATE_BASE; | |
1794 | list_for_each_entry(ref, &hdl->ctrl_refs, node) { | |
1795 | /* Search for private user controls that are compatible with | |
1796 | VIDIOC_G/S_CTRL. */ | |
0f8017be | 1797 | if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER && |
0996517c | 1798 | V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) { |
d9a25471 | 1799 | if (!ref->ctrl->is_int) |
0996517c HV |
1800 | continue; |
1801 | if (id == 0) | |
1802 | return ref; | |
1803 | id--; | |
1804 | } | |
1805 | } | |
1806 | return NULL; | |
1807 | } | |
1808 | ||
1809 | /* Find a control with the given ID. */ | |
1810 | static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id) | |
1811 | { | |
1812 | struct v4l2_ctrl_ref *ref; | |
1813 | int bucket; | |
1814 | ||
1815 | id &= V4L2_CTRL_ID_MASK; | |
1816 | ||
1817 | /* Old-style private controls need special handling */ | |
1818 | if (id >= V4L2_CID_PRIVATE_BASE) | |
1819 | return find_private_ref(hdl, id); | |
1820 | bucket = id % hdl->nr_of_buckets; | |
1821 | ||
1822 | /* Simple optimization: cache the last control found */ | |
1823 | if (hdl->cached && hdl->cached->ctrl->id == id) | |
1824 | return hdl->cached; | |
1825 | ||
1826 | /* Not in cache, search the hash */ | |
1827 | ref = hdl->buckets ? hdl->buckets[bucket] : NULL; | |
1828 | while (ref && ref->ctrl->id != id) | |
1829 | ref = ref->next; | |
1830 | ||
1831 | if (ref) | |
1832 | hdl->cached = ref; /* cache it! */ | |
1833 | return ref; | |
1834 | } | |
1835 | ||
1836 | /* Find a control with the given ID. Take the handler's lock first. */ | |
1837 | static struct v4l2_ctrl_ref *find_ref_lock( | |
1838 | struct v4l2_ctrl_handler *hdl, u32 id) | |
1839 | { | |
1840 | struct v4l2_ctrl_ref *ref = NULL; | |
1841 | ||
1842 | if (hdl) { | |
77e7c4e6 | 1843 | mutex_lock(hdl->lock); |
0996517c | 1844 | ref = find_ref(hdl, id); |
77e7c4e6 | 1845 | mutex_unlock(hdl->lock); |
0996517c HV |
1846 | } |
1847 | return ref; | |
1848 | } | |
1849 | ||
1850 | /* Find a control with the given ID. */ | |
1851 | struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id) | |
1852 | { | |
1853 | struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id); | |
1854 | ||
1855 | return ref ? ref->ctrl : NULL; | |
1856 | } | |
1857 | EXPORT_SYMBOL(v4l2_ctrl_find); | |
1858 | ||
1859 | /* Allocate a new v4l2_ctrl_ref and hook it into the handler. */ | |
1860 | static int handler_new_ref(struct v4l2_ctrl_handler *hdl, | |
1861 | struct v4l2_ctrl *ctrl) | |
1862 | { | |
1863 | struct v4l2_ctrl_ref *ref; | |
1864 | struct v4l2_ctrl_ref *new_ref; | |
1865 | u32 id = ctrl->id; | |
0f8017be | 1866 | u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1; |
0996517c HV |
1867 | int bucket = id % hdl->nr_of_buckets; /* which bucket to use */ |
1868 | ||
d9a25471 HV |
1869 | /* |
1870 | * Automatically add the control class if it is not yet present and | |
1871 | * the new control is not a compound control. | |
1872 | */ | |
1873 | if (ctrl->type < V4L2_CTRL_COMPOUND_TYPES && | |
1874 | id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL) | |
0996517c HV |
1875 | if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0)) |
1876 | return hdl->error; | |
1877 | ||
1878 | if (hdl->error) | |
1879 | return hdl->error; | |
1880 | ||
1881 | new_ref = kzalloc(sizeof(*new_ref), GFP_KERNEL); | |
1882 | if (!new_ref) | |
1883 | return handler_set_err(hdl, -ENOMEM); | |
1884 | new_ref->ctrl = ctrl; | |
1885 | if (ctrl->handler == hdl) { | |
1886 | /* By default each control starts in a cluster of its own. | |
1887 | new_ref->ctrl is basically a cluster array with one | |
1888 | element, so that's perfect to use as the cluster pointer. | |
1889 | But only do this for the handler that owns the control. */ | |
1890 | ctrl->cluster = &new_ref->ctrl; | |
1891 | ctrl->ncontrols = 1; | |
1892 | } | |
1893 | ||
1894 | INIT_LIST_HEAD(&new_ref->node); | |
1895 | ||
77e7c4e6 | 1896 | mutex_lock(hdl->lock); |
0996517c HV |
1897 | |
1898 | /* Add immediately at the end of the list if the list is empty, or if | |
1899 | the last element in the list has a lower ID. | |
1900 | This ensures that when elements are added in ascending order the | |
1901 | insertion is an O(1) operation. */ | |
1902 | if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) { | |
1903 | list_add_tail(&new_ref->node, &hdl->ctrl_refs); | |
1904 | goto insert_in_hash; | |
1905 | } | |
1906 | ||
1907 | /* Find insert position in sorted list */ | |
1908 | list_for_each_entry(ref, &hdl->ctrl_refs, node) { | |
1909 | if (ref->ctrl->id < id) | |
1910 | continue; | |
1911 | /* Don't add duplicates */ | |
1912 | if (ref->ctrl->id == id) { | |
1913 | kfree(new_ref); | |
1914 | goto unlock; | |
1915 | } | |
1916 | list_add(&new_ref->node, ref->node.prev); | |
1917 | break; | |
1918 | } | |
1919 | ||
1920 | insert_in_hash: | |
1921 | /* Insert the control node in the hash */ | |
1922 | new_ref->next = hdl->buckets[bucket]; | |
1923 | hdl->buckets[bucket] = new_ref; | |
1924 | ||
1925 | unlock: | |
77e7c4e6 | 1926 | mutex_unlock(hdl->lock); |
0996517c HV |
1927 | return 0; |
1928 | } | |
1929 | ||
1930 | /* Add a new control */ | |
1931 | static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, | |
1932 | const struct v4l2_ctrl_ops *ops, | |
0176077a | 1933 | const struct v4l2_ctrl_type_ops *type_ops, |
0996517c | 1934 | u32 id, const char *name, enum v4l2_ctrl_type type, |
0ba2aeb6 | 1935 | s64 min, s64 max, u64 step, s64 def, |
20d88eef | 1936 | const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size, |
ce580fe5 SA |
1937 | u32 flags, const char * const *qmenu, |
1938 | const s64 *qmenu_int, void *priv) | |
0996517c HV |
1939 | { |
1940 | struct v4l2_ctrl *ctrl; | |
d9a25471 | 1941 | unsigned sz_extra; |
20d88eef HV |
1942 | unsigned nr_of_dims = 0; |
1943 | unsigned elems = 1; | |
998e7659 HV |
1944 | bool is_array; |
1945 | unsigned tot_ctrl_size; | |
302ab7ce | 1946 | unsigned idx; |
d9a25471 | 1947 | void *data; |
2ccbe779 | 1948 | int err; |
0996517c HV |
1949 | |
1950 | if (hdl->error) | |
1951 | return NULL; | |
1952 | ||
20d88eef HV |
1953 | while (dims && dims[nr_of_dims]) { |
1954 | elems *= dims[nr_of_dims]; | |
1955 | nr_of_dims++; | |
1956 | if (nr_of_dims == V4L2_CTRL_MAX_DIMS) | |
1957 | break; | |
1958 | } | |
998e7659 | 1959 | is_array = nr_of_dims > 0; |
20d88eef | 1960 | |
dda4a4d5 HV |
1961 | /* Prefill elem_size for all types handled by std_type_ops */ |
1962 | switch (type) { | |
1963 | case V4L2_CTRL_TYPE_INTEGER64: | |
d9a25471 | 1964 | elem_size = sizeof(s64); |
dda4a4d5 HV |
1965 | break; |
1966 | case V4L2_CTRL_TYPE_STRING: | |
d9a25471 | 1967 | elem_size = max + 1; |
dda4a4d5 HV |
1968 | break; |
1969 | case V4L2_CTRL_TYPE_U8: | |
1970 | elem_size = sizeof(u8); | |
1971 | break; | |
1972 | case V4L2_CTRL_TYPE_U16: | |
1973 | elem_size = sizeof(u16); | |
1974 | break; | |
811c5081 HV |
1975 | case V4L2_CTRL_TYPE_U32: |
1976 | elem_size = sizeof(u32); | |
1977 | break; | |
dda4a4d5 HV |
1978 | default: |
1979 | if (type < V4L2_CTRL_COMPOUND_TYPES) | |
1980 | elem_size = sizeof(s32); | |
1981 | break; | |
1982 | } | |
998e7659 | 1983 | tot_ctrl_size = elem_size * elems; |
d9a25471 | 1984 | |
0996517c | 1985 | /* Sanity checks */ |
998e7659 HV |
1986 | if (id == 0 || name == NULL || !elem_size || |
1987 | id >= V4L2_CID_PRIVATE_BASE || | |
0996517c | 1988 | (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) || |
2ccbe779 | 1989 | (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) { |
fa4d7096 HV |
1990 | handler_set_err(hdl, -ERANGE); |
1991 | return NULL; | |
1992 | } | |
2ccbe779 SN |
1993 | err = check_range(type, min, max, step, def); |
1994 | if (err) { | |
1995 | handler_set_err(hdl, err); | |
02ac0480 HV |
1996 | return NULL; |
1997 | } | |
fa4d7096 HV |
1998 | if (type == V4L2_CTRL_TYPE_BITMASK && ((def & ~max) || min || step)) { |
1999 | handler_set_err(hdl, -ERANGE); | |
2000 | return NULL; | |
2001 | } | |
998e7659 HV |
2002 | if (is_array && |
2003 | (type == V4L2_CTRL_TYPE_BUTTON || | |
2004 | type == V4L2_CTRL_TYPE_CTRL_CLASS)) { | |
2005 | handler_set_err(hdl, -EINVAL); | |
2006 | return NULL; | |
2007 | } | |
0996517c | 2008 | |
d9a25471 | 2009 | sz_extra = 0; |
0996517c | 2010 | if (type == V4L2_CTRL_TYPE_BUTTON) |
ef66c0ca RRD |
2011 | flags |= V4L2_CTRL_FLAG_WRITE_ONLY | |
2012 | V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; | |
0996517c HV |
2013 | else if (type == V4L2_CTRL_TYPE_CTRL_CLASS) |
2014 | flags |= V4L2_CTRL_FLAG_READ_ONLY; | |
2a9ec373 HV |
2015 | else if (type == V4L2_CTRL_TYPE_INTEGER64 || |
2016 | type == V4L2_CTRL_TYPE_STRING || | |
998e7659 HV |
2017 | type >= V4L2_CTRL_COMPOUND_TYPES || |
2018 | is_array) | |
2019 | sz_extra += 2 * tot_ctrl_size; | |
0996517c HV |
2020 | |
2021 | ctrl = kzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL); | |
2022 | if (ctrl == NULL) { | |
2023 | handler_set_err(hdl, -ENOMEM); | |
2024 | return NULL; | |
2025 | } | |
2026 | ||
2027 | INIT_LIST_HEAD(&ctrl->node); | |
77068d36 | 2028 | INIT_LIST_HEAD(&ctrl->ev_subs); |
0996517c HV |
2029 | ctrl->handler = hdl; |
2030 | ctrl->ops = ops; | |
0176077a | 2031 | ctrl->type_ops = type_ops ? type_ops : &std_type_ops; |
0996517c HV |
2032 | ctrl->id = id; |
2033 | ctrl->name = name; | |
2034 | ctrl->type = type; | |
2035 | ctrl->flags = flags; | |
2036 | ctrl->minimum = min; | |
2037 | ctrl->maximum = max; | |
2038 | ctrl->step = step; | |
d9a25471 | 2039 | ctrl->default_value = def; |
998e7659 HV |
2040 | ctrl->is_string = !is_array && type == V4L2_CTRL_TYPE_STRING; |
2041 | ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string; | |
d9a25471 | 2042 | ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64; |
998e7659 | 2043 | ctrl->is_array = is_array; |
20d88eef HV |
2044 | ctrl->elems = elems; |
2045 | ctrl->nr_of_dims = nr_of_dims; | |
2046 | if (nr_of_dims) | |
2047 | memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0])); | |
d9a25471 | 2048 | ctrl->elem_size = elem_size; |
ce580fe5 SA |
2049 | if (type == V4L2_CTRL_TYPE_MENU) |
2050 | ctrl->qmenu = qmenu; | |
2051 | else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) | |
2052 | ctrl->qmenu_int = qmenu_int; | |
0996517c | 2053 | ctrl->priv = priv; |
d9a25471 | 2054 | ctrl->cur.val = ctrl->val = def; |
2a9ec373 | 2055 | data = &ctrl[1]; |
d9a25471 | 2056 | |
2a9ec373 HV |
2057 | if (!ctrl->is_int) { |
2058 | ctrl->p_new.p = data; | |
998e7659 | 2059 | ctrl->p_cur.p = data + tot_ctrl_size; |
0176077a HV |
2060 | } else { |
2061 | ctrl->p_new.p = &ctrl->val; | |
2062 | ctrl->p_cur.p = &ctrl->cur.val; | |
0996517c | 2063 | } |
302ab7ce HV |
2064 | for (idx = 0; idx < elems; idx++) { |
2065 | ctrl->type_ops->init(ctrl, idx, ctrl->p_cur); | |
2066 | ctrl->type_ops->init(ctrl, idx, ctrl->p_new); | |
2067 | } | |
0176077a | 2068 | |
0996517c HV |
2069 | if (handler_new_ref(hdl, ctrl)) { |
2070 | kfree(ctrl); | |
2071 | return NULL; | |
2072 | } | |
77e7c4e6 | 2073 | mutex_lock(hdl->lock); |
0996517c | 2074 | list_add_tail(&ctrl->node, &hdl->ctrls); |
77e7c4e6 | 2075 | mutex_unlock(hdl->lock); |
0996517c HV |
2076 | return ctrl; |
2077 | } | |
2078 | ||
2079 | struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl, | |
2080 | const struct v4l2_ctrl_config *cfg, void *priv) | |
2081 | { | |
2082 | bool is_menu; | |
2083 | struct v4l2_ctrl *ctrl; | |
2084 | const char *name = cfg->name; | |
513521ea | 2085 | const char * const *qmenu = cfg->qmenu; |
ce580fe5 | 2086 | const s64 *qmenu_int = cfg->qmenu_int; |
0996517c HV |
2087 | enum v4l2_ctrl_type type = cfg->type; |
2088 | u32 flags = cfg->flags; | |
0ba2aeb6 HV |
2089 | s64 min = cfg->min; |
2090 | s64 max = cfg->max; | |
2091 | u64 step = cfg->step; | |
2092 | s64 def = cfg->def; | |
0996517c HV |
2093 | |
2094 | if (name == NULL) | |
2095 | v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step, | |
2096 | &def, &flags); | |
2097 | ||
ce580fe5 SA |
2098 | is_menu = (cfg->type == V4L2_CTRL_TYPE_MENU || |
2099 | cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU); | |
0996517c HV |
2100 | if (is_menu) |
2101 | WARN_ON(step); | |
2102 | else | |
2103 | WARN_ON(cfg->menu_skip_mask); | |
ce580fe5 | 2104 | if (cfg->type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) |
0996517c | 2105 | qmenu = v4l2_ctrl_get_menu(cfg->id); |
ce580fe5 SA |
2106 | else if (cfg->type == V4L2_CTRL_TYPE_INTEGER_MENU && |
2107 | qmenu_int == NULL) { | |
2108 | handler_set_err(hdl, -EINVAL); | |
2109 | return NULL; | |
2110 | } | |
0996517c | 2111 | |
0176077a | 2112 | ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name, |
0996517c | 2113 | type, min, max, |
20d88eef HV |
2114 | is_menu ? cfg->menu_skip_mask : step, def, |
2115 | cfg->dims, cfg->elem_size, | |
d9a25471 | 2116 | flags, qmenu, qmenu_int, priv); |
88365105 | 2117 | if (ctrl) |
0996517c | 2118 | ctrl->is_private = cfg->is_private; |
0996517c HV |
2119 | return ctrl; |
2120 | } | |
2121 | EXPORT_SYMBOL(v4l2_ctrl_new_custom); | |
2122 | ||
2123 | /* Helper function for standard non-menu controls */ | |
2124 | struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl, | |
2125 | const struct v4l2_ctrl_ops *ops, | |
0ba2aeb6 | 2126 | u32 id, s64 min, s64 max, u64 step, s64 def) |
0996517c HV |
2127 | { |
2128 | const char *name; | |
2129 | enum v4l2_ctrl_type type; | |
2130 | u32 flags; | |
2131 | ||
2132 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); | |
d9a25471 HV |
2133 | if (type == V4L2_CTRL_TYPE_MENU || |
2134 | type == V4L2_CTRL_TYPE_INTEGER_MENU || | |
2135 | type >= V4L2_CTRL_COMPOUND_TYPES) { | |
0996517c HV |
2136 | handler_set_err(hdl, -EINVAL); |
2137 | return NULL; | |
2138 | } | |
0176077a | 2139 | return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, |
20d88eef | 2140 | min, max, step, def, NULL, 0, |
d9a25471 | 2141 | flags, NULL, NULL, NULL); |
0996517c HV |
2142 | } |
2143 | EXPORT_SYMBOL(v4l2_ctrl_new_std); | |
2144 | ||
2145 | /* Helper function for standard menu controls */ | |
2146 | struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, | |
2147 | const struct v4l2_ctrl_ops *ops, | |
0ba2aeb6 | 2148 | u32 id, u8 _max, u64 mask, u8 _def) |
0996517c | 2149 | { |
d1e9b7c1 SN |
2150 | const char * const *qmenu = NULL; |
2151 | const s64 *qmenu_int = NULL; | |
fbbb29a6 | 2152 | unsigned int qmenu_int_len = 0; |
0996517c HV |
2153 | const char *name; |
2154 | enum v4l2_ctrl_type type; | |
0ba2aeb6 HV |
2155 | s64 min; |
2156 | s64 max = _max; | |
2157 | s64 def = _def; | |
2158 | u64 step; | |
0996517c HV |
2159 | u32 flags; |
2160 | ||
2161 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); | |
d1e9b7c1 SN |
2162 | |
2163 | if (type == V4L2_CTRL_TYPE_MENU) | |
2164 | qmenu = v4l2_ctrl_get_menu(id); | |
2165 | else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) | |
2166 | qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len); | |
2167 | ||
2168 | if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) { | |
0996517c HV |
2169 | handler_set_err(hdl, -EINVAL); |
2170 | return NULL; | |
2171 | } | |
0176077a | 2172 | return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, |
20d88eef | 2173 | 0, max, mask, def, NULL, 0, |
d9a25471 | 2174 | flags, qmenu, qmenu_int, NULL); |
0996517c HV |
2175 | } |
2176 | EXPORT_SYMBOL(v4l2_ctrl_new_std_menu); | |
2177 | ||
117a711a LP |
2178 | /* Helper function for standard menu controls with driver defined menu */ |
2179 | struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl, | |
0ba2aeb6 HV |
2180 | const struct v4l2_ctrl_ops *ops, u32 id, u8 _max, |
2181 | u64 mask, u8 _def, const char * const *qmenu) | |
117a711a LP |
2182 | { |
2183 | enum v4l2_ctrl_type type; | |
2184 | const char *name; | |
2185 | u32 flags; | |
0ba2aeb6 HV |
2186 | u64 step; |
2187 | s64 min; | |
2188 | s64 max = _max; | |
2189 | s64 def = _def; | |
117a711a LP |
2190 | |
2191 | /* v4l2_ctrl_new_std_menu_items() should only be called for | |
2192 | * standard controls without a standard menu. | |
2193 | */ | |
2194 | if (v4l2_ctrl_get_menu(id)) { | |
2195 | handler_set_err(hdl, -EINVAL); | |
2196 | return NULL; | |
2197 | } | |
2198 | ||
2199 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); | |
2200 | if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) { | |
2201 | handler_set_err(hdl, -EINVAL); | |
2202 | return NULL; | |
2203 | } | |
0176077a | 2204 | return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, |
20d88eef HV |
2205 | 0, max, mask, def, NULL, 0, |
2206 | flags, qmenu, NULL, NULL); | |
117a711a LP |
2207 | |
2208 | } | |
2209 | EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items); | |
2210 | ||
515f3287 SN |
2211 | /* Helper function for standard integer menu controls */ |
2212 | struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, | |
2213 | const struct v4l2_ctrl_ops *ops, | |
0ba2aeb6 | 2214 | u32 id, u8 _max, u8 _def, const s64 *qmenu_int) |
515f3287 SN |
2215 | { |
2216 | const char *name; | |
2217 | enum v4l2_ctrl_type type; | |
0ba2aeb6 HV |
2218 | s64 min; |
2219 | u64 step; | |
2220 | s64 max = _max; | |
2221 | s64 def = _def; | |
515f3287 SN |
2222 | u32 flags; |
2223 | ||
2224 | v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags); | |
2225 | if (type != V4L2_CTRL_TYPE_INTEGER_MENU) { | |
2226 | handler_set_err(hdl, -EINVAL); | |
2227 | return NULL; | |
2228 | } | |
0176077a | 2229 | return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, |
20d88eef | 2230 | 0, max, 0, def, NULL, 0, |
d9a25471 | 2231 | flags, NULL, qmenu_int, NULL); |
515f3287 SN |
2232 | } |
2233 | EXPORT_SYMBOL(v4l2_ctrl_new_int_menu); | |
2234 | ||
0996517c HV |
2235 | /* Add the controls from another handler to our own. */ |
2236 | int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl, | |
34a6b7d0 HV |
2237 | struct v4l2_ctrl_handler *add, |
2238 | bool (*filter)(const struct v4l2_ctrl *ctrl)) | |
0996517c | 2239 | { |
072e6602 | 2240 | struct v4l2_ctrl_ref *ref; |
0996517c HV |
2241 | int ret = 0; |
2242 | ||
2243 | /* Do nothing if either handler is NULL or if they are the same */ | |
2244 | if (!hdl || !add || hdl == add) | |
2245 | return 0; | |
2246 | if (hdl->error) | |
2247 | return hdl->error; | |
77e7c4e6 | 2248 | mutex_lock(add->lock); |
072e6602 HV |
2249 | list_for_each_entry(ref, &add->ctrl_refs, node) { |
2250 | struct v4l2_ctrl *ctrl = ref->ctrl; | |
2251 | ||
0996517c HV |
2252 | /* Skip handler-private controls. */ |
2253 | if (ctrl->is_private) | |
2254 | continue; | |
6e239399 HV |
2255 | /* And control classes */ |
2256 | if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) | |
2257 | continue; | |
34a6b7d0 HV |
2258 | /* Filter any unwanted controls */ |
2259 | if (filter && !filter(ctrl)) | |
2260 | continue; | |
0996517c HV |
2261 | ret = handler_new_ref(hdl, ctrl); |
2262 | if (ret) | |
2263 | break; | |
2264 | } | |
77e7c4e6 | 2265 | mutex_unlock(add->lock); |
0996517c HV |
2266 | return ret; |
2267 | } | |
2268 | EXPORT_SYMBOL(v4l2_ctrl_add_handler); | |
2269 | ||
34a6b7d0 HV |
2270 | bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl) |
2271 | { | |
0f8017be | 2272 | if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX) |
34a6b7d0 | 2273 | return true; |
0f8017be | 2274 | if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX) |
3963d4fb | 2275 | return true; |
34a6b7d0 HV |
2276 | switch (ctrl->id) { |
2277 | case V4L2_CID_AUDIO_MUTE: | |
2278 | case V4L2_CID_AUDIO_VOLUME: | |
2279 | case V4L2_CID_AUDIO_BALANCE: | |
2280 | case V4L2_CID_AUDIO_BASS: | |
2281 | case V4L2_CID_AUDIO_TREBLE: | |
2282 | case V4L2_CID_AUDIO_LOUDNESS: | |
2283 | return true; | |
2284 | default: | |
2285 | break; | |
2286 | } | |
2287 | return false; | |
2288 | } | |
2289 | EXPORT_SYMBOL(v4l2_ctrl_radio_filter); | |
2290 | ||
0996517c HV |
2291 | /* Cluster controls */ |
2292 | void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls) | |
2293 | { | |
5626b8c7 | 2294 | bool has_volatiles = false; |
0996517c HV |
2295 | int i; |
2296 | ||
2297 | /* The first control is the master control and it must not be NULL */ | |
c817d927 HV |
2298 | if (WARN_ON(ncontrols == 0 || controls[0] == NULL)) |
2299 | return; | |
0996517c HV |
2300 | |
2301 | for (i = 0; i < ncontrols; i++) { | |
2302 | if (controls[i]) { | |
2303 | controls[i]->cluster = controls; | |
2304 | controls[i]->ncontrols = ncontrols; | |
5626b8c7 HV |
2305 | if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE) |
2306 | has_volatiles = true; | |
0996517c HV |
2307 | } |
2308 | } | |
5626b8c7 | 2309 | controls[0]->has_volatiles = has_volatiles; |
0996517c HV |
2310 | } |
2311 | EXPORT_SYMBOL(v4l2_ctrl_cluster); | |
2312 | ||
72d877ca HV |
2313 | void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls, |
2314 | u8 manual_val, bool set_volatile) | |
2315 | { | |
2316 | struct v4l2_ctrl *master = controls[0]; | |
5626b8c7 | 2317 | u32 flag = 0; |
72d877ca HV |
2318 | int i; |
2319 | ||
2320 | v4l2_ctrl_cluster(ncontrols, controls); | |
2321 | WARN_ON(ncontrols <= 1); | |
82a7c049 | 2322 | WARN_ON(manual_val < master->minimum || manual_val > master->maximum); |
5626b8c7 | 2323 | WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl)); |
72d877ca | 2324 | master->is_auto = true; |
5626b8c7 | 2325 | master->has_volatiles = set_volatile; |
72d877ca HV |
2326 | master->manual_mode_value = manual_val; |
2327 | master->flags |= V4L2_CTRL_FLAG_UPDATE; | |
5626b8c7 HV |
2328 | |
2329 | if (!is_cur_manual(master)) | |
2330 | flag = V4L2_CTRL_FLAG_INACTIVE | | |
2331 | (set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0); | |
72d877ca HV |
2332 | |
2333 | for (i = 1; i < ncontrols; i++) | |
88365105 | 2334 | if (controls[i]) |
72d877ca | 2335 | controls[i]->flags |= flag; |
72d877ca HV |
2336 | } |
2337 | EXPORT_SYMBOL(v4l2_ctrl_auto_cluster); | |
2338 | ||
0996517c HV |
2339 | /* Activate/deactivate a control. */ |
2340 | void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active) | |
2341 | { | |
6e239399 HV |
2342 | /* invert since the actual flag is called 'inactive' */ |
2343 | bool inactive = !active; | |
2344 | bool old; | |
2345 | ||
0996517c HV |
2346 | if (ctrl == NULL) |
2347 | return; | |
2348 | ||
6e239399 | 2349 | if (inactive) |
0996517c | 2350 | /* set V4L2_CTRL_FLAG_INACTIVE */ |
6e239399 | 2351 | old = test_and_set_bit(4, &ctrl->flags); |
0996517c HV |
2352 | else |
2353 | /* clear V4L2_CTRL_FLAG_INACTIVE */ | |
6e239399 HV |
2354 | old = test_and_clear_bit(4, &ctrl->flags); |
2355 | if (old != inactive) | |
2356 | send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); | |
0996517c HV |
2357 | } |
2358 | EXPORT_SYMBOL(v4l2_ctrl_activate); | |
2359 | ||
2360 | /* Grab/ungrab a control. | |
2361 | Typically used when streaming starts and you want to grab controls, | |
2362 | preventing the user from changing them. | |
2363 | ||
2364 | Just call this and the framework will block any attempts to change | |
2365 | these controls. */ | |
2366 | void v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed) | |
2367 | { | |
6e239399 HV |
2368 | bool old; |
2369 | ||
0996517c HV |
2370 | if (ctrl == NULL) |
2371 | return; | |
2372 | ||
6e239399 | 2373 | v4l2_ctrl_lock(ctrl); |
0996517c HV |
2374 | if (grabbed) |
2375 | /* set V4L2_CTRL_FLAG_GRABBED */ | |
6e239399 | 2376 | old = test_and_set_bit(1, &ctrl->flags); |
0996517c HV |
2377 | else |
2378 | /* clear V4L2_CTRL_FLAG_GRABBED */ | |
6e239399 HV |
2379 | old = test_and_clear_bit(1, &ctrl->flags); |
2380 | if (old != grabbed) | |
2381 | send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS); | |
2382 | v4l2_ctrl_unlock(ctrl); | |
0996517c HV |
2383 | } |
2384 | EXPORT_SYMBOL(v4l2_ctrl_grab); | |
2385 | ||
2386 | /* Log the control name and value */ | |
2387 | static void log_ctrl(const struct v4l2_ctrl *ctrl, | |
2388 | const char *prefix, const char *colon) | |
2389 | { | |
0996517c HV |
2390 | if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY)) |
2391 | return; | |
2392 | if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS) | |
2393 | return; | |
2394 | ||
7eafbce9 | 2395 | pr_info("%s%s%s: ", prefix, colon, ctrl->name); |
0996517c | 2396 | |
0176077a HV |
2397 | ctrl->type_ops->log(ctrl); |
2398 | ||
88365105 HV |
2399 | if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE | |
2400 | V4L2_CTRL_FLAG_GRABBED | | |
2401 | V4L2_CTRL_FLAG_VOLATILE)) { | |
2402 | if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) | |
7eafbce9 | 2403 | pr_cont(" inactive"); |
88365105 | 2404 | if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED) |
7eafbce9 | 2405 | pr_cont(" grabbed"); |
88365105 | 2406 | if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) |
7eafbce9 | 2407 | pr_cont(" volatile"); |
88365105 | 2408 | } |
7eafbce9 | 2409 | pr_cont("\n"); |
0996517c HV |
2410 | } |
2411 | ||
2412 | /* Log all controls owned by the handler */ | |
2413 | void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl, | |
2414 | const char *prefix) | |
2415 | { | |
2416 | struct v4l2_ctrl *ctrl; | |
2417 | const char *colon = ""; | |
2418 | int len; | |
2419 | ||
2420 | if (hdl == NULL) | |
2421 | return; | |
2422 | if (prefix == NULL) | |
2423 | prefix = ""; | |
2424 | len = strlen(prefix); | |
2425 | if (len && prefix[len - 1] != ' ') | |
2426 | colon = ": "; | |
77e7c4e6 | 2427 | mutex_lock(hdl->lock); |
0996517c HV |
2428 | list_for_each_entry(ctrl, &hdl->ctrls, node) |
2429 | if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED)) | |
2430 | log_ctrl(ctrl, prefix, colon); | |
77e7c4e6 | 2431 | mutex_unlock(hdl->lock); |
0996517c HV |
2432 | } |
2433 | EXPORT_SYMBOL(v4l2_ctrl_handler_log_status); | |
2434 | ||
ffa9b9f0 SN |
2435 | int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd) |
2436 | { | |
2437 | v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name); | |
2438 | return 0; | |
2439 | } | |
2440 | EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status); | |
2441 | ||
0996517c HV |
2442 | /* Call s_ctrl for all controls owned by the handler */ |
2443 | int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl) | |
2444 | { | |
2445 | struct v4l2_ctrl *ctrl; | |
2446 | int ret = 0; | |
2447 | ||
2448 | if (hdl == NULL) | |
2449 | return 0; | |
77e7c4e6 | 2450 | mutex_lock(hdl->lock); |
0996517c HV |
2451 | list_for_each_entry(ctrl, &hdl->ctrls, node) |
2452 | ctrl->done = false; | |
2453 | ||
2454 | list_for_each_entry(ctrl, &hdl->ctrls, node) { | |
2455 | struct v4l2_ctrl *master = ctrl->cluster[0]; | |
2456 | int i; | |
2457 | ||
2458 | /* Skip if this control was already handled by a cluster. */ | |
71c6c4c9 HV |
2459 | /* Skip button controls and read-only controls. */ |
2460 | if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON || | |
2461 | (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)) | |
0996517c HV |
2462 | continue; |
2463 | ||
2a863793 HV |
2464 | for (i = 0; i < master->ncontrols; i++) { |
2465 | if (master->cluster[i]) { | |
2466 | cur_to_new(master->cluster[i]); | |
2467 | master->cluster[i]->is_new = 1; | |
71c6c4c9 | 2468 | master->cluster[i]->done = true; |
2a863793 HV |
2469 | } |
2470 | } | |
54c911eb | 2471 | ret = call_op(master, s_ctrl); |
0996517c HV |
2472 | if (ret) |
2473 | break; | |
0996517c | 2474 | } |
77e7c4e6 | 2475 | mutex_unlock(hdl->lock); |
0996517c HV |
2476 | return ret; |
2477 | } | |
2478 | EXPORT_SYMBOL(v4l2_ctrl_handler_setup); | |
2479 | ||
d9a25471 HV |
2480 | /* Implement VIDIOC_QUERY_EXT_CTRL */ |
2481 | int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc) | |
0996517c | 2482 | { |
d9a25471 | 2483 | const unsigned next_flags = V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND; |
0996517c HV |
2484 | u32 id = qc->id & V4L2_CTRL_ID_MASK; |
2485 | struct v4l2_ctrl_ref *ref; | |
2486 | struct v4l2_ctrl *ctrl; | |
2487 | ||
2488 | if (hdl == NULL) | |
2489 | return -EINVAL; | |
2490 | ||
77e7c4e6 | 2491 | mutex_lock(hdl->lock); |
0996517c HV |
2492 | |
2493 | /* Try to find it */ | |
2494 | ref = find_ref(hdl, id); | |
2495 | ||
d9a25471 HV |
2496 | if ((qc->id & next_flags) && !list_empty(&hdl->ctrl_refs)) { |
2497 | bool is_compound; | |
2498 | /* Match any control that is not hidden */ | |
2499 | unsigned mask = 1; | |
2500 | bool match = false; | |
2501 | ||
2502 | if ((qc->id & next_flags) == V4L2_CTRL_FLAG_NEXT_COMPOUND) { | |
2503 | /* Match any hidden control */ | |
2504 | match = true; | |
2505 | } else if ((qc->id & next_flags) == next_flags) { | |
2506 | /* Match any control, compound or not */ | |
2507 | mask = 0; | |
2508 | } | |
2509 | ||
0996517c HV |
2510 | /* Find the next control with ID > qc->id */ |
2511 | ||
2512 | /* Did we reach the end of the control list? */ | |
2513 | if (id >= node2id(hdl->ctrl_refs.prev)) { | |
2514 | ref = NULL; /* Yes, so there is no next control */ | |
2515 | } else if (ref) { | |
2516 | /* We found a control with the given ID, so just get | |
d9a25471 HV |
2517 | the next valid one in the list. */ |
2518 | list_for_each_entry_continue(ref, &hdl->ctrl_refs, node) { | |
35204e2e | 2519 | is_compound = ref->ctrl->is_array || |
d9a25471 HV |
2520 | ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES; |
2521 | if (id < ref->ctrl->id && | |
2522 | (is_compound & mask) == match) | |
2523 | break; | |
2524 | } | |
2525 | if (&ref->node == &hdl->ctrl_refs) | |
2526 | ref = NULL; | |
0996517c HV |
2527 | } else { |
2528 | /* No control with the given ID exists, so start | |
2529 | searching for the next largest ID. We know there | |
2530 | is one, otherwise the first 'if' above would have | |
2531 | been true. */ | |
d9a25471 | 2532 | list_for_each_entry(ref, &hdl->ctrl_refs, node) { |
35204e2e | 2533 | is_compound = ref->ctrl->is_array || |
d9a25471 HV |
2534 | ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES; |
2535 | if (id < ref->ctrl->id && | |
2536 | (is_compound & mask) == match) | |
0996517c | 2537 | break; |
d9a25471 HV |
2538 | } |
2539 | if (&ref->node == &hdl->ctrl_refs) | |
2540 | ref = NULL; | |
0996517c HV |
2541 | } |
2542 | } | |
77e7c4e6 | 2543 | mutex_unlock(hdl->lock); |
d9a25471 | 2544 | |
0996517c HV |
2545 | if (!ref) |
2546 | return -EINVAL; | |
2547 | ||
2548 | ctrl = ref->ctrl; | |
2549 | memset(qc, 0, sizeof(*qc)); | |
829fb2dc HV |
2550 | if (id >= V4L2_CID_PRIVATE_BASE) |
2551 | qc->id = id; | |
2552 | else | |
2553 | qc->id = ctrl->id; | |
0996517c | 2554 | strlcpy(qc->name, ctrl->name, sizeof(qc->name)); |
d9a25471 HV |
2555 | qc->flags = ctrl->flags; |
2556 | qc->type = ctrl->type; | |
2557 | if (ctrl->is_ptr) | |
2558 | qc->flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD; | |
2559 | qc->elem_size = ctrl->elem_size; | |
20d88eef HV |
2560 | qc->elems = ctrl->elems; |
2561 | qc->nr_of_dims = ctrl->nr_of_dims; | |
2562 | memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0])); | |
0996517c HV |
2563 | qc->minimum = ctrl->minimum; |
2564 | qc->maximum = ctrl->maximum; | |
2565 | qc->default_value = ctrl->default_value; | |
ce580fe5 SA |
2566 | if (ctrl->type == V4L2_CTRL_TYPE_MENU |
2567 | || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU) | |
0996517c HV |
2568 | qc->step = 1; |
2569 | else | |
2570 | qc->step = ctrl->step; | |
d9a25471 HV |
2571 | return 0; |
2572 | } | |
2573 | EXPORT_SYMBOL(v4l2_query_ext_ctrl); | |
2574 | ||
2575 | /* Implement VIDIOC_QUERYCTRL */ | |
2576 | int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc) | |
2577 | { | |
2578 | struct v4l2_query_ext_ctrl qec = { qc->id }; | |
2579 | int rc; | |
2580 | ||
2581 | rc = v4l2_query_ext_ctrl(hdl, &qec); | |
2582 | if (rc) | |
2583 | return rc; | |
2584 | ||
2585 | qc->id = qec.id; | |
2586 | qc->type = qec.type; | |
2587 | qc->flags = qec.flags; | |
2588 | strlcpy(qc->name, qec.name, sizeof(qc->name)); | |
2589 | switch (qc->type) { | |
2590 | case V4L2_CTRL_TYPE_INTEGER: | |
2591 | case V4L2_CTRL_TYPE_BOOLEAN: | |
2592 | case V4L2_CTRL_TYPE_MENU: | |
2593 | case V4L2_CTRL_TYPE_INTEGER_MENU: | |
2594 | case V4L2_CTRL_TYPE_STRING: | |
2595 | case V4L2_CTRL_TYPE_BITMASK: | |
2596 | qc->minimum = qec.minimum; | |
2597 | qc->maximum = qec.maximum; | |
2598 | qc->step = qec.step; | |
2599 | qc->default_value = qec.default_value; | |
2600 | break; | |
2601 | default: | |
2602 | qc->minimum = 0; | |
2603 | qc->maximum = 0; | |
2604 | qc->step = 0; | |
2605 | qc->default_value = 0; | |
2606 | break; | |
2607 | } | |
0996517c HV |
2608 | return 0; |
2609 | } | |
2610 | EXPORT_SYMBOL(v4l2_queryctrl); | |
2611 | ||
0996517c HV |
2612 | /* Implement VIDIOC_QUERYMENU */ |
2613 | int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm) | |
2614 | { | |
2615 | struct v4l2_ctrl *ctrl; | |
2616 | u32 i = qm->index; | |
2617 | ||
2618 | ctrl = v4l2_ctrl_find(hdl, qm->id); | |
2619 | if (!ctrl) | |
2620 | return -EINVAL; | |
2621 | ||
2622 | qm->reserved = 0; | |
2623 | /* Sanity checks */ | |
ce580fe5 SA |
2624 | switch (ctrl->type) { |
2625 | case V4L2_CTRL_TYPE_MENU: | |
2626 | if (ctrl->qmenu == NULL) | |
2627 | return -EINVAL; | |
2628 | break; | |
2629 | case V4L2_CTRL_TYPE_INTEGER_MENU: | |
2630 | if (ctrl->qmenu_int == NULL) | |
2631 | return -EINVAL; | |
2632 | break; | |
2633 | default: | |
2634 | return -EINVAL; | |
2635 | } | |
2636 | ||
2637 | if (i < ctrl->minimum || i > ctrl->maximum) | |
0996517c | 2638 | return -EINVAL; |
ce580fe5 | 2639 | |
0996517c HV |
2640 | /* Use mask to see if this menu item should be skipped */ |
2641 | if (ctrl->menu_skip_mask & (1 << i)) | |
2642 | return -EINVAL; | |
2643 | /* Empty menu items should also be skipped */ | |
ce580fe5 SA |
2644 | if (ctrl->type == V4L2_CTRL_TYPE_MENU) { |
2645 | if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0') | |
2646 | return -EINVAL; | |
2647 | strlcpy(qm->name, ctrl->qmenu[i], sizeof(qm->name)); | |
2648 | } else { | |
2649 | qm->value = ctrl->qmenu_int[i]; | |
2650 | } | |
0996517c HV |
2651 | return 0; |
2652 | } | |
2653 | EXPORT_SYMBOL(v4l2_querymenu); | |
2654 | ||
0996517c HV |
2655 | |
2656 | /* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS: | |
2657 | ||
2658 | It is not a fully atomic operation, just best-effort only. After all, if | |
2659 | multiple controls have to be set through multiple i2c writes (for example) | |
2660 | then some initial writes may succeed while others fail. Thus leaving the | |
2661 | system in an inconsistent state. The question is how much effort you are | |
2662 | willing to spend on trying to make something atomic that really isn't. | |
2663 | ||
2664 | From the point of view of an application the main requirement is that | |
2665 | when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an | |
2666 | error should be returned without actually affecting any controls. | |
2667 | ||
2668 | If all the values are correct, then it is acceptable to just give up | |
2669 | in case of low-level errors. | |
2670 | ||
2671 | It is important though that the application can tell when only a partial | |
2672 | configuration was done. The way we do that is through the error_idx field | |
2673 | of struct v4l2_ext_controls: if that is equal to the count field then no | |
2674 | controls were affected. Otherwise all controls before that index were | |
2675 | successful in performing their 'get' or 'set' operation, the control at | |
2676 | the given index failed, and you don't know what happened with the controls | |
2677 | after the failed one. Since if they were part of a control cluster they | |
2678 | could have been successfully processed (if a cluster member was encountered | |
2679 | at index < error_idx), they could have failed (if a cluster member was at | |
2680 | error_idx), or they may not have been processed yet (if the first cluster | |
2681 | member appeared after error_idx). | |
2682 | ||
2683 | It is all fairly theoretical, though. In practice all you can do is to | |
2684 | bail out. If error_idx == count, then it is an application bug. If | |
2685 | error_idx < count then it is only an application bug if the error code was | |
2686 | EBUSY. That usually means that something started streaming just when you | |
2687 | tried to set the controls. In all other cases it is a driver/hardware | |
2688 | problem and all you can do is to retry or bail out. | |
2689 | ||
2690 | Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that | |
2691 | never modifies controls the error_idx is just set to whatever control | |
2692 | has an invalid value. | |
2693 | */ | |
2694 | ||
2695 | /* Prepare for the extended g/s/try functions. | |
2696 | Find the controls in the control array and do some basic checks. */ | |
2697 | static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl, | |
2698 | struct v4l2_ext_controls *cs, | |
d9a25471 HV |
2699 | struct v4l2_ctrl_helper *helpers, |
2700 | bool get) | |
0996517c | 2701 | { |
eb5b16ef HV |
2702 | struct v4l2_ctrl_helper *h; |
2703 | bool have_clusters = false; | |
0996517c HV |
2704 | u32 i; |
2705 | ||
eb5b16ef | 2706 | for (i = 0, h = helpers; i < cs->count; i++, h++) { |
0996517c | 2707 | struct v4l2_ext_control *c = &cs->controls[i]; |
eb5b16ef | 2708 | struct v4l2_ctrl_ref *ref; |
0996517c HV |
2709 | struct v4l2_ctrl *ctrl; |
2710 | u32 id = c->id & V4L2_CTRL_ID_MASK; | |
2711 | ||
37cd3b73 | 2712 | cs->error_idx = i; |
0996517c | 2713 | |
953eae5d RRD |
2714 | if (cs->which && |
2715 | cs->which != V4L2_CTRL_WHICH_DEF_VAL && | |
2716 | V4L2_CTRL_ID2WHICH(id) != cs->which) | |
0996517c HV |
2717 | return -EINVAL; |
2718 | ||
2719 | /* Old-style private controls are not allowed for | |
2720 | extended controls */ | |
2721 | if (id >= V4L2_CID_PRIVATE_BASE) | |
2722 | return -EINVAL; | |
eb5b16ef HV |
2723 | ref = find_ref_lock(hdl, id); |
2724 | if (ref == NULL) | |
0996517c | 2725 | return -EINVAL; |
eb5b16ef | 2726 | ctrl = ref->ctrl; |
0996517c HV |
2727 | if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) |
2728 | return -EINVAL; | |
2729 | ||
eb5b16ef HV |
2730 | if (ctrl->cluster[0]->ncontrols > 1) |
2731 | have_clusters = true; | |
2732 | if (ctrl->cluster[0] != ctrl) | |
2733 | ref = find_ref_lock(hdl, ctrl->cluster[0]->id); | |
302ab7ce HV |
2734 | if (ctrl->is_ptr && !ctrl->is_string) { |
2735 | unsigned tot_size = ctrl->elems * ctrl->elem_size; | |
2736 | ||
2737 | if (c->size < tot_size) { | |
2738 | if (get) { | |
2739 | c->size = tot_size; | |
2740 | return -ENOSPC; | |
2741 | } | |
2742 | return -EFAULT; | |
d9a25471 | 2743 | } |
302ab7ce | 2744 | c->size = tot_size; |
d9a25471 | 2745 | } |
eb5b16ef HV |
2746 | /* Store the ref to the master control of the cluster */ |
2747 | h->mref = ref; | |
2748 | h->ctrl = ctrl; | |
2749 | /* Initially set next to 0, meaning that there is no other | |
2750 | control in this helper array belonging to the same | |
2751 | cluster */ | |
2752 | h->next = 0; | |
0996517c | 2753 | } |
0996517c | 2754 | |
eb5b16ef HV |
2755 | /* We are done if there were no controls that belong to a multi- |
2756 | control cluster. */ | |
2757 | if (!have_clusters) | |
2758 | return 0; | |
0996517c | 2759 | |
eb5b16ef HV |
2760 | /* The code below figures out in O(n) time which controls in the list |
2761 | belong to the same cluster. */ | |
0996517c | 2762 | |
eb5b16ef | 2763 | /* This has to be done with the handler lock taken. */ |
77e7c4e6 | 2764 | mutex_lock(hdl->lock); |
0996517c | 2765 | |
eb5b16ef HV |
2766 | /* First zero the helper field in the master control references */ |
2767 | for (i = 0; i < cs->count; i++) | |
c082266f | 2768 | helpers[i].mref->helper = NULL; |
eb5b16ef HV |
2769 | for (i = 0, h = helpers; i < cs->count; i++, h++) { |
2770 | struct v4l2_ctrl_ref *mref = h->mref; | |
2771 | ||
2772 | /* If the mref->helper is set, then it points to an earlier | |
2773 | helper that belongs to the same cluster. */ | |
2774 | if (mref->helper) { | |
2775 | /* Set the next field of mref->helper to the current | |
2776 | index: this means that that earlier helper now | |
2777 | points to the next helper in the same cluster. */ | |
2778 | mref->helper->next = i; | |
2779 | /* mref should be set only for the first helper in the | |
2780 | cluster, clear the others. */ | |
2781 | h->mref = NULL; | |
2782 | } | |
2783 | /* Point the mref helper to the current helper struct. */ | |
2784 | mref->helper = h; | |
0996517c | 2785 | } |
77e7c4e6 | 2786 | mutex_unlock(hdl->lock); |
eb5b16ef | 2787 | return 0; |
0996517c HV |
2788 | } |
2789 | ||
2790 | /* Handles the corner case where cs->count == 0. It checks whether the | |
2791 | specified control class exists. If that class ID is 0, then it checks | |
2792 | whether there are any controls at all. */ | |
0f8017be | 2793 | static int class_check(struct v4l2_ctrl_handler *hdl, u32 which) |
0996517c | 2794 | { |
953eae5d | 2795 | if (which == 0 || which == V4L2_CTRL_WHICH_DEF_VAL) |
0996517c | 2796 | return list_empty(&hdl->ctrl_refs) ? -EINVAL : 0; |
0f8017be | 2797 | return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL; |
0996517c HV |
2798 | } |
2799 | ||
2800 | ||
2801 | ||
2802 | /* Get extended controls. Allocates the helpers array if needed. */ | |
2803 | int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct v4l2_ext_controls *cs) | |
2804 | { | |
eb5b16ef HV |
2805 | struct v4l2_ctrl_helper helper[4]; |
2806 | struct v4l2_ctrl_helper *helpers = helper; | |
0996517c | 2807 | int ret; |
ddac5c10 | 2808 | int i, j; |
953eae5d RRD |
2809 | bool def_value; |
2810 | ||
2811 | def_value = (cs->which == V4L2_CTRL_WHICH_DEF_VAL); | |
0996517c HV |
2812 | |
2813 | cs->error_idx = cs->count; | |
0f8017be | 2814 | cs->which = V4L2_CTRL_ID2WHICH(cs->which); |
0996517c HV |
2815 | |
2816 | if (hdl == NULL) | |
2817 | return -EINVAL; | |
2818 | ||
2819 | if (cs->count == 0) | |
0f8017be | 2820 | return class_check(hdl, cs->which); |
0996517c HV |
2821 | |
2822 | if (cs->count > ARRAY_SIZE(helper)) { | |
5f0049bd XW |
2823 | helpers = kmalloc_array(cs->count, sizeof(helper[0]), |
2824 | GFP_KERNEL); | |
0996517c HV |
2825 | if (helpers == NULL) |
2826 | return -ENOMEM; | |
2827 | } | |
2828 | ||
d9a25471 | 2829 | ret = prepare_ext_ctrls(hdl, cs, helpers, true); |
37cd3b73 | 2830 | cs->error_idx = cs->count; |
0996517c HV |
2831 | |
2832 | for (i = 0; !ret && i < cs->count; i++) | |
2833 | if (helpers[i].ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) | |
2834 | ret = -EACCES; | |
2835 | ||
2836 | for (i = 0; !ret && i < cs->count; i++) { | |
eb5b16ef | 2837 | int (*ctrl_to_user)(struct v4l2_ext_control *c, |
953eae5d | 2838 | struct v4l2_ctrl *ctrl); |
eb5b16ef | 2839 | struct v4l2_ctrl *master; |
0996517c | 2840 | |
953eae5d RRD |
2841 | ctrl_to_user = def_value ? def_to_user : cur_to_user; |
2842 | ||
eb5b16ef | 2843 | if (helpers[i].mref == NULL) |
0996517c HV |
2844 | continue; |
2845 | ||
eb5b16ef | 2846 | master = helpers[i].mref->ctrl; |
0996517c HV |
2847 | cs->error_idx = i; |
2848 | ||
2849 | v4l2_ctrl_lock(master); | |
ddac5c10 HV |
2850 | |
2851 | /* g_volatile_ctrl will update the new control values */ | |
953eae5d RRD |
2852 | if (!def_value && |
2853 | ((master->flags & V4L2_CTRL_FLAG_VOLATILE) || | |
2854 | (master->has_volatiles && !is_cur_manual(master)))) { | |
ddac5c10 HV |
2855 | for (j = 0; j < master->ncontrols; j++) |
2856 | cur_to_new(master->cluster[j]); | |
54c911eb | 2857 | ret = call_op(master, g_volatile_ctrl); |
eb5b16ef | 2858 | ctrl_to_user = new_to_user; |
ddac5c10 HV |
2859 | } |
2860 | /* If OK, then copy the current (for non-volatile controls) | |
2861 | or the new (for volatile controls) control values to the | |
2862 | caller */ | |
eb5b16ef HV |
2863 | if (!ret) { |
2864 | u32 idx = i; | |
2865 | ||
2866 | do { | |
2867 | ret = ctrl_to_user(cs->controls + idx, | |
2868 | helpers[idx].ctrl); | |
2869 | idx = helpers[idx].next; | |
2870 | } while (!ret && idx); | |
2871 | } | |
0996517c | 2872 | v4l2_ctrl_unlock(master); |
0996517c HV |
2873 | } |
2874 | ||
2875 | if (cs->count > ARRAY_SIZE(helper)) | |
2876 | kfree(helpers); | |
2877 | return ret; | |
2878 | } | |
2879 | EXPORT_SYMBOL(v4l2_g_ext_ctrls); | |
2880 | ||
0996517c | 2881 | /* Helper function to get a single control */ |
03d5285b | 2882 | static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c) |
0996517c HV |
2883 | { |
2884 | struct v4l2_ctrl *master = ctrl->cluster[0]; | |
2885 | int ret = 0; | |
ddac5c10 | 2886 | int i; |
0996517c | 2887 | |
d9a25471 | 2888 | /* Compound controls are not supported. The new_to_user() and |
03d5285b LP |
2889 | * cur_to_user() calls below would need to be modified not to access |
2890 | * userspace memory when called from get_ctrl(). | |
2891 | */ | |
a8077734 | 2892 | if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64) |
03d5285b LP |
2893 | return -EINVAL; |
2894 | ||
0996517c HV |
2895 | if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY) |
2896 | return -EACCES; | |
2897 | ||
2898 | v4l2_ctrl_lock(master); | |
2899 | /* g_volatile_ctrl will update the current control values */ | |
5626b8c7 | 2900 | if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { |
ddac5c10 HV |
2901 | for (i = 0; i < master->ncontrols; i++) |
2902 | cur_to_new(master->cluster[i]); | |
54c911eb | 2903 | ret = call_op(master, g_volatile_ctrl); |
03d5285b | 2904 | new_to_user(c, ctrl); |
ddac5c10 | 2905 | } else { |
03d5285b | 2906 | cur_to_user(c, ctrl); |
ddac5c10 | 2907 | } |
0996517c HV |
2908 | v4l2_ctrl_unlock(master); |
2909 | return ret; | |
2910 | } | |
2911 | ||
2912 | int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control) | |
2913 | { | |
2914 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); | |
03d5285b LP |
2915 | struct v4l2_ext_control c; |
2916 | int ret; | |
0996517c | 2917 | |
d9a25471 | 2918 | if (ctrl == NULL || !ctrl->is_int) |
0996517c | 2919 | return -EINVAL; |
03d5285b LP |
2920 | ret = get_ctrl(ctrl, &c); |
2921 | control->value = c.value; | |
2922 | return ret; | |
0996517c HV |
2923 | } |
2924 | EXPORT_SYMBOL(v4l2_g_ctrl); | |
2925 | ||
0996517c HV |
2926 | s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl) |
2927 | { | |
03d5285b | 2928 | struct v4l2_ext_control c; |
0996517c HV |
2929 | |
2930 | /* It's a driver bug if this happens. */ | |
d9a25471 | 2931 | WARN_ON(!ctrl->is_int); |
03d5285b LP |
2932 | c.value = 0; |
2933 | get_ctrl(ctrl, &c); | |
2934 | return c.value; | |
0996517c HV |
2935 | } |
2936 | EXPORT_SYMBOL(v4l2_ctrl_g_ctrl); | |
2937 | ||
03d5285b LP |
2938 | s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl) |
2939 | { | |
2940 | struct v4l2_ext_control c; | |
2941 | ||
2942 | /* It's a driver bug if this happens. */ | |
998e7659 | 2943 | WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64); |
a8077734 | 2944 | c.value64 = 0; |
03d5285b | 2945 | get_ctrl(ctrl, &c); |
a8077734 | 2946 | return c.value64; |
03d5285b LP |
2947 | } |
2948 | EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64); | |
2949 | ||
0996517c HV |
2950 | |
2951 | /* Core function that calls try/s_ctrl and ensures that the new value is | |
2952 | copied to the current value on a set. | |
2953 | Must be called with ctrl->handler->lock held. */ | |
2ccbe779 SN |
2954 | static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master, |
2955 | bool set, u32 ch_flags) | |
0996517c | 2956 | { |
72d877ca | 2957 | bool update_flag; |
eb5b16ef | 2958 | int ret; |
0996517c HV |
2959 | int i; |
2960 | ||
2961 | /* Go through the cluster and either validate the new value or | |
2962 | (if no new value was set), copy the current value to the new | |
2963 | value, ensuring a consistent view for the control ops when | |
2964 | called. */ | |
eb5b16ef | 2965 | for (i = 0; i < master->ncontrols; i++) { |
0996517c HV |
2966 | struct v4l2_ctrl *ctrl = master->cluster[i]; |
2967 | ||
2968 | if (ctrl == NULL) | |
2969 | continue; | |
2970 | ||
eb5b16ef HV |
2971 | if (!ctrl->is_new) { |
2972 | cur_to_new(ctrl); | |
0996517c HV |
2973 | continue; |
2974 | } | |
eb5b16ef HV |
2975 | /* Check again: it may have changed since the |
2976 | previous check in try_or_set_ext_ctrls(). */ | |
2977 | if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) | |
2978 | return -EBUSY; | |
0996517c HV |
2979 | } |
2980 | ||
eb5b16ef | 2981 | ret = call_op(master, try_ctrl); |
0996517c HV |
2982 | |
2983 | /* Don't set if there is no change */ | |
72d877ca HV |
2984 | if (ret || !set || !cluster_changed(master)) |
2985 | return ret; | |
2986 | ret = call_op(master, s_ctrl); | |
72d877ca HV |
2987 | if (ret) |
2988 | return ret; | |
2989 | ||
eb5b16ef | 2990 | /* If OK, then make the new values permanent. */ |
72d877ca HV |
2991 | update_flag = is_cur_manual(master) != is_new_manual(master); |
2992 | for (i = 0; i < master->ncontrols; i++) | |
2ccbe779 SN |
2993 | new_to_cur(fh, master->cluster[i], ch_flags | |
2994 | ((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0)); | |
72d877ca | 2995 | return 0; |
0996517c HV |
2996 | } |
2997 | ||
e6402585 HV |
2998 | /* Validate controls. */ |
2999 | static int validate_ctrls(struct v4l2_ext_controls *cs, | |
3000 | struct v4l2_ctrl_helper *helpers, bool set) | |
0996517c | 3001 | { |
e6402585 | 3002 | unsigned i; |
0996517c HV |
3003 | int ret = 0; |
3004 | ||
eb5b16ef | 3005 | cs->error_idx = cs->count; |
0996517c HV |
3006 | for (i = 0; i < cs->count; i++) { |
3007 | struct v4l2_ctrl *ctrl = helpers[i].ctrl; | |
7a7f1ab3 | 3008 | union v4l2_ctrl_ptr p_new; |
0996517c | 3009 | |
e6402585 | 3010 | cs->error_idx = i; |
0996517c HV |
3011 | |
3012 | if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) | |
3013 | return -EACCES; | |
3014 | /* This test is also done in try_set_control_cluster() which | |
3015 | is called in atomic context, so that has the final say, | |
3016 | but it makes sense to do an up-front check as well. Once | |
3017 | an error occurs in try_set_control_cluster() some other | |
3018 | controls may have been set already and we want to do a | |
3019 | best-effort to avoid that. */ | |
3020 | if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) | |
3021 | return -EBUSY; | |
7a7f1ab3 HV |
3022 | /* |
3023 | * Skip validation for now if the payload needs to be copied | |
3024 | * from userspace into kernelspace. We'll validate those later. | |
3025 | */ | |
3026 | if (ctrl->is_ptr) | |
3027 | continue; | |
3028 | if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) | |
3029 | p_new.p_s64 = &cs->controls[i].value64; | |
3030 | else | |
3031 | p_new.p_s32 = &cs->controls[i].value; | |
3032 | ret = validate_new(ctrl, p_new); | |
eb5b16ef HV |
3033 | if (ret) |
3034 | return ret; | |
0996517c | 3035 | } |
e6402585 HV |
3036 | return 0; |
3037 | } | |
3038 | ||
5626b8c7 HV |
3039 | /* Obtain the current volatile values of an autocluster and mark them |
3040 | as new. */ | |
3041 | static void update_from_auto_cluster(struct v4l2_ctrl *master) | |
3042 | { | |
3043 | int i; | |
3044 | ||
759b26a1 | 3045 | for (i = 1; i < master->ncontrols; i++) |
5626b8c7 HV |
3046 | cur_to_new(master->cluster[i]); |
3047 | if (!call_op(master, g_volatile_ctrl)) | |
3048 | for (i = 1; i < master->ncontrols; i++) | |
3049 | if (master->cluster[i]) | |
3050 | master->cluster[i]->is_new = 1; | |
3051 | } | |
3052 | ||
e6402585 HV |
3053 | /* Try or try-and-set controls */ |
3054 | static int try_set_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, | |
3055 | struct v4l2_ext_controls *cs, | |
3056 | bool set) | |
3057 | { | |
3058 | struct v4l2_ctrl_helper helper[4]; | |
3059 | struct v4l2_ctrl_helper *helpers = helper; | |
3060 | unsigned i, j; | |
3061 | int ret; | |
3062 | ||
3063 | cs->error_idx = cs->count; | |
953eae5d RRD |
3064 | |
3065 | /* Default value cannot be changed */ | |
3066 | if (cs->which == V4L2_CTRL_WHICH_DEF_VAL) | |
3067 | return -EINVAL; | |
3068 | ||
0f8017be | 3069 | cs->which = V4L2_CTRL_ID2WHICH(cs->which); |
e6402585 HV |
3070 | |
3071 | if (hdl == NULL) | |
3072 | return -EINVAL; | |
3073 | ||
3074 | if (cs->count == 0) | |
0f8017be | 3075 | return class_check(hdl, cs->which); |
0996517c | 3076 | |
e6402585 | 3077 | if (cs->count > ARRAY_SIZE(helper)) { |
0a3475eb XW |
3078 | helpers = kmalloc_array(cs->count, sizeof(helper[0]), |
3079 | GFP_KERNEL); | |
e6402585 HV |
3080 | if (!helpers) |
3081 | return -ENOMEM; | |
3082 | } | |
d9a25471 | 3083 | ret = prepare_ext_ctrls(hdl, cs, helpers, false); |
e6402585 HV |
3084 | if (!ret) |
3085 | ret = validate_ctrls(cs, helpers, set); | |
3086 | if (ret && set) | |
3087 | cs->error_idx = cs->count; | |
0996517c | 3088 | for (i = 0; !ret && i < cs->count; i++) { |
eb5b16ef HV |
3089 | struct v4l2_ctrl *master; |
3090 | u32 idx = i; | |
0996517c | 3091 | |
eb5b16ef | 3092 | if (helpers[i].mref == NULL) |
0996517c HV |
3093 | continue; |
3094 | ||
37cd3b73 | 3095 | cs->error_idx = i; |
eb5b16ef HV |
3096 | master = helpers[i].mref->ctrl; |
3097 | v4l2_ctrl_lock(master); | |
0996517c | 3098 | |
2a863793 | 3099 | /* Reset the 'is_new' flags of the cluster */ |
0996517c HV |
3100 | for (j = 0; j < master->ncontrols; j++) |
3101 | if (master->cluster[j]) | |
2a863793 | 3102 | master->cluster[j]->is_new = 0; |
0996517c | 3103 | |
5626b8c7 HV |
3104 | /* For volatile autoclusters that are currently in auto mode |
3105 | we need to discover if it will be set to manual mode. | |
3106 | If so, then we have to copy the current volatile values | |
3107 | first since those will become the new manual values (which | |
3108 | may be overwritten by explicit new values from this set | |
3109 | of controls). */ | |
3110 | if (master->is_auto && master->has_volatiles && | |
3111 | !is_cur_manual(master)) { | |
3112 | /* Pick an initial non-manual value */ | |
3113 | s32 new_auto_val = master->manual_mode_value + 1; | |
3114 | u32 tmp_idx = idx; | |
3115 | ||
3116 | do { | |
3117 | /* Check if the auto control is part of the | |
3118 | list, and remember the new value. */ | |
3119 | if (helpers[tmp_idx].ctrl == master) | |
3120 | new_auto_val = cs->controls[tmp_idx].value; | |
3121 | tmp_idx = helpers[tmp_idx].next; | |
3122 | } while (tmp_idx); | |
3123 | /* If the new value == the manual value, then copy | |
3124 | the current volatile values. */ | |
3125 | if (new_auto_val == master->manual_mode_value) | |
3126 | update_from_auto_cluster(master); | |
3127 | } | |
3128 | ||
0996517c | 3129 | /* Copy the new caller-supplied control values. |
2a863793 | 3130 | user_to_new() sets 'is_new' to 1. */ |
eb5b16ef | 3131 | do { |
7a7f1ab3 HV |
3132 | struct v4l2_ctrl *ctrl = helpers[idx].ctrl; |
3133 | ||
3134 | ret = user_to_new(cs->controls + idx, ctrl); | |
3135 | if (!ret && ctrl->is_ptr) | |
3136 | ret = validate_new(ctrl, ctrl->p_new); | |
eb5b16ef HV |
3137 | idx = helpers[idx].next; |
3138 | } while (!ret && idx); | |
0996517c HV |
3139 | |
3140 | if (!ret) | |
2ccbe779 | 3141 | ret = try_or_set_cluster(fh, master, set, 0); |
0996517c HV |
3142 | |
3143 | /* Copy the new values back to userspace. */ | |
eb5b16ef HV |
3144 | if (!ret) { |
3145 | idx = i; | |
3146 | do { | |
adf41b9b | 3147 | ret = new_to_user(cs->controls + idx, |
e6402585 | 3148 | helpers[idx].ctrl); |
eb5b16ef HV |
3149 | idx = helpers[idx].next; |
3150 | } while (!ret && idx); | |
3151 | } | |
3152 | v4l2_ctrl_unlock(master); | |
0996517c | 3153 | } |
0996517c | 3154 | |
0996517c HV |
3155 | if (cs->count > ARRAY_SIZE(helper)) |
3156 | kfree(helpers); | |
3157 | return ret; | |
3158 | } | |
3159 | ||
3160 | int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct v4l2_ext_controls *cs) | |
3161 | { | |
ab892bac | 3162 | return try_set_ext_ctrls(NULL, hdl, cs, false); |
0996517c HV |
3163 | } |
3164 | EXPORT_SYMBOL(v4l2_try_ext_ctrls); | |
3165 | ||
ab892bac HV |
3166 | int v4l2_s_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, |
3167 | struct v4l2_ext_controls *cs) | |
0996517c | 3168 | { |
ab892bac | 3169 | return try_set_ext_ctrls(fh, hdl, cs, true); |
0996517c HV |
3170 | } |
3171 | EXPORT_SYMBOL(v4l2_s_ext_ctrls); | |
3172 | ||
0996517c | 3173 | /* Helper function for VIDIOC_S_CTRL compatibility */ |
7a7f1ab3 | 3174 | static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags) |
0996517c HV |
3175 | { |
3176 | struct v4l2_ctrl *master = ctrl->cluster[0]; | |
7a7f1ab3 | 3177 | int ret; |
0996517c HV |
3178 | int i; |
3179 | ||
2a863793 | 3180 | /* Reset the 'is_new' flags of the cluster */ |
0996517c HV |
3181 | for (i = 0; i < master->ncontrols; i++) |
3182 | if (master->cluster[i]) | |
2a863793 | 3183 | master->cluster[i]->is_new = 0; |
0996517c | 3184 | |
7a7f1ab3 HV |
3185 | ret = validate_new(ctrl, ctrl->p_new); |
3186 | if (ret) | |
3187 | return ret; | |
5d0360a4 | 3188 | |
5626b8c7 HV |
3189 | /* For autoclusters with volatiles that are switched from auto to |
3190 | manual mode we have to update the current volatile values since | |
3191 | those will become the initial manual values after such a switch. */ | |
3192 | if (master->is_auto && master->has_volatiles && ctrl == master && | |
5d0360a4 | 3193 | !is_cur_manual(master) && ctrl->val == master->manual_mode_value) |
5626b8c7 | 3194 | update_from_auto_cluster(master); |
03d5285b | 3195 | |
5d0360a4 | 3196 | ctrl->is_new = 1; |
2ccbe779 SN |
3197 | return try_or_set_cluster(fh, master, true, ch_flags); |
3198 | } | |
03d5285b | 3199 | |
2ccbe779 SN |
3200 | /* Helper function for VIDIOC_S_CTRL compatibility */ |
3201 | static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, | |
3202 | struct v4l2_ext_control *c) | |
3203 | { | |
7a7f1ab3 | 3204 | int ret; |
2ccbe779 | 3205 | |
7a7f1ab3 HV |
3206 | v4l2_ctrl_lock(ctrl); |
3207 | user_to_new(c, ctrl); | |
3208 | ret = set_ctrl(fh, ctrl, 0); | |
3209 | if (!ret) | |
3210 | cur_to_user(c, ctrl); | |
3211 | v4l2_ctrl_unlock(ctrl); | |
0996517c HV |
3212 | return ret; |
3213 | } | |
3214 | ||
ab892bac HV |
3215 | int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl, |
3216 | struct v4l2_control *control) | |
0996517c HV |
3217 | { |
3218 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id); | |
7a7f1ab3 | 3219 | struct v4l2_ext_control c = { control->id }; |
03d5285b | 3220 | int ret; |
0996517c | 3221 | |
d9a25471 | 3222 | if (ctrl == NULL || !ctrl->is_int) |
0996517c HV |
3223 | return -EINVAL; |
3224 | ||
7ebbc39f HV |
3225 | if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) |
3226 | return -EACCES; | |
3227 | ||
03d5285b | 3228 | c.value = control->value; |
2ccbe779 | 3229 | ret = set_ctrl_lock(fh, ctrl, &c); |
03d5285b LP |
3230 | control->value = c.value; |
3231 | return ret; | |
0996517c HV |
3232 | } |
3233 | EXPORT_SYMBOL(v4l2_s_ctrl); | |
3234 | ||
0c4348ad | 3235 | int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val) |
0996517c | 3236 | { |
0c4348ad | 3237 | lockdep_assert_held(ctrl->handler->lock); |
03d5285b | 3238 | |
0996517c | 3239 | /* It's a driver bug if this happens. */ |
d9a25471 | 3240 | WARN_ON(!ctrl->is_int); |
5d0360a4 | 3241 | ctrl->val = val; |
7a7f1ab3 | 3242 | return set_ctrl(NULL, ctrl, 0); |
0996517c | 3243 | } |
0c4348ad | 3244 | EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl); |
6e239399 | 3245 | |
0c4348ad | 3246 | int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val) |
03d5285b | 3247 | { |
0c4348ad | 3248 | lockdep_assert_held(ctrl->handler->lock); |
03d5285b LP |
3249 | |
3250 | /* It's a driver bug if this happens. */ | |
998e7659 | 3251 | WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64); |
5d0360a4 | 3252 | *ctrl->p_new.p_s64 = val; |
7a7f1ab3 | 3253 | return set_ctrl(NULL, ctrl, 0); |
03d5285b | 3254 | } |
0c4348ad | 3255 | EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64); |
03d5285b | 3256 | |
5d0360a4 HV |
3257 | int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s) |
3258 | { | |
3259 | lockdep_assert_held(ctrl->handler->lock); | |
3260 | ||
3261 | /* It's a driver bug if this happens. */ | |
3262 | WARN_ON(ctrl->type != V4L2_CTRL_TYPE_STRING); | |
3263 | strlcpy(ctrl->p_new.p_char, s, ctrl->maximum + 1); | |
7a7f1ab3 | 3264 | return set_ctrl(NULL, ctrl, 0); |
5d0360a4 HV |
3265 | } |
3266 | EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string); | |
3267 | ||
8ac7a949 HV |
3268 | void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv) |
3269 | { | |
3270 | if (ctrl == NULL) | |
3271 | return; | |
3272 | if (notify == NULL) { | |
3273 | ctrl->call_notify = 0; | |
3274 | return; | |
3275 | } | |
3276 | if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify)) | |
3277 | return; | |
3278 | ctrl->handler->notify = notify; | |
3279 | ctrl->handler->notify_priv = priv; | |
3280 | ctrl->call_notify = 1; | |
3281 | } | |
3282 | EXPORT_SYMBOL(v4l2_ctrl_notify); | |
3283 | ||
5a573925 | 3284 | int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl, |
0ba2aeb6 | 3285 | s64 min, s64 max, u64 step, s64 def) |
2ccbe779 | 3286 | { |
95ad7ff3 RRD |
3287 | bool value_changed; |
3288 | bool range_changed = false; | |
302ab7ce | 3289 | int ret; |
2ccbe779 | 3290 | |
5a573925 SA |
3291 | lockdep_assert_held(ctrl->handler->lock); |
3292 | ||
2ccbe779 SN |
3293 | switch (ctrl->type) { |
3294 | case V4L2_CTRL_TYPE_INTEGER: | |
0ba2aeb6 | 3295 | case V4L2_CTRL_TYPE_INTEGER64: |
2ccbe779 SN |
3296 | case V4L2_CTRL_TYPE_BOOLEAN: |
3297 | case V4L2_CTRL_TYPE_MENU: | |
3298 | case V4L2_CTRL_TYPE_INTEGER_MENU: | |
3299 | case V4L2_CTRL_TYPE_BITMASK: | |
dda4a4d5 HV |
3300 | case V4L2_CTRL_TYPE_U8: |
3301 | case V4L2_CTRL_TYPE_U16: | |
811c5081 | 3302 | case V4L2_CTRL_TYPE_U32: |
302ab7ce HV |
3303 | if (ctrl->is_array) |
3304 | return -EINVAL; | |
3305 | ret = check_range(ctrl->type, min, max, step, def); | |
2ccbe779 SN |
3306 | if (ret) |
3307 | return ret; | |
3308 | break; | |
3309 | default: | |
3310 | return -EINVAL; | |
3311 | } | |
95ad7ff3 RRD |
3312 | if ((ctrl->minimum != min) || (ctrl->maximum != max) || |
3313 | (ctrl->step != step) || ctrl->default_value != def) { | |
3314 | range_changed = true; | |
3315 | ctrl->minimum = min; | |
3316 | ctrl->maximum = max; | |
3317 | ctrl->step = step; | |
3318 | ctrl->default_value = def; | |
3319 | } | |
7a7f1ab3 HV |
3320 | cur_to_new(ctrl); |
3321 | if (validate_new(ctrl, ctrl->p_new)) { | |
3322 | if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) | |
3323 | *ctrl->p_new.p_s64 = def; | |
3324 | else | |
3325 | *ctrl->p_new.p_s32 = def; | |
3326 | } | |
3327 | ||
3328 | if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64) | |
95ad7ff3 | 3329 | value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64; |
7a7f1ab3 | 3330 | else |
95ad7ff3 RRD |
3331 | value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32; |
3332 | if (value_changed) | |
7a7f1ab3 | 3333 | ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE); |
95ad7ff3 | 3334 | else if (range_changed) |
2ccbe779 | 3335 | send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE); |
2ccbe779 SN |
3336 | return ret; |
3337 | } | |
5a573925 | 3338 | EXPORT_SYMBOL(__v4l2_ctrl_modify_range); |
2ccbe779 | 3339 | |
6e6d76cd | 3340 | static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems) |
6e239399 | 3341 | { |
3e366149 HG |
3342 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); |
3343 | ||
3344 | if (ctrl == NULL) | |
3345 | return -EINVAL; | |
3346 | ||
6e239399 | 3347 | v4l2_ctrl_lock(ctrl); |
77068d36 | 3348 | list_add_tail(&sev->node, &ctrl->ev_subs); |
6e239399 | 3349 | if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS && |
77068d36 | 3350 | (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) { |
6e239399 | 3351 | struct v4l2_event ev; |
c12fcfd6 | 3352 | u32 changes = V4L2_EVENT_CTRL_CH_FLAGS; |
6e239399 | 3353 | |
c12fcfd6 HV |
3354 | if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)) |
3355 | changes |= V4L2_EVENT_CTRL_CH_VALUE; | |
3356 | fill_event(&ev, ctrl, changes); | |
6e6d76cd HV |
3357 | /* Mark the queue as active, allowing this initial |
3358 | event to be accepted. */ | |
3359 | sev->elems = elems; | |
77068d36 | 3360 | v4l2_event_queue_fh(sev->fh, &ev); |
6e239399 HV |
3361 | } |
3362 | v4l2_ctrl_unlock(ctrl); | |
3e366149 | 3363 | return 0; |
6e239399 | 3364 | } |
6e239399 | 3365 | |
3e366149 | 3366 | static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev) |
6e239399 | 3367 | { |
3e366149 HG |
3368 | struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id); |
3369 | ||
6e239399 | 3370 | v4l2_ctrl_lock(ctrl); |
77068d36 | 3371 | list_del(&sev->node); |
6e239399 HV |
3372 | v4l2_ctrl_unlock(ctrl); |
3373 | } | |
3e366149 HG |
3374 | |
3375 | void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new) | |
3376 | { | |
3377 | u32 old_changes = old->u.ctrl.changes; | |
3378 | ||
3379 | old->u.ctrl = new->u.ctrl; | |
3380 | old->u.ctrl.changes |= old_changes; | |
3381 | } | |
3382 | EXPORT_SYMBOL(v4l2_ctrl_replace); | |
3383 | ||
3384 | void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new) | |
3385 | { | |
3386 | new->u.ctrl.changes |= old->u.ctrl.changes; | |
3387 | } | |
3388 | EXPORT_SYMBOL(v4l2_ctrl_merge); | |
3389 | ||
3390 | const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = { | |
3391 | .add = v4l2_ctrl_add_event, | |
3392 | .del = v4l2_ctrl_del_event, | |
3393 | .replace = v4l2_ctrl_replace, | |
3394 | .merge = v4l2_ctrl_merge, | |
3395 | }; | |
3396 | EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops); | |
e2ecb257 HV |
3397 | |
3398 | int v4l2_ctrl_log_status(struct file *file, void *fh) | |
3399 | { | |
3400 | struct video_device *vfd = video_devdata(file); | |
3401 | struct v4l2_fh *vfh = file->private_data; | |
3402 | ||
3403 | if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev) | |
3404 | v4l2_ctrl_handler_log_status(vfh->ctrl_handler, | |
3405 | vfd->v4l2_dev->name); | |
3406 | return 0; | |
3407 | } | |
3408 | EXPORT_SYMBOL(v4l2_ctrl_log_status); | |
a26243b0 HV |
3409 | |
3410 | int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh, | |
85f5fe39 | 3411 | const struct v4l2_event_subscription *sub) |
a26243b0 HV |
3412 | { |
3413 | if (sub->type == V4L2_EVENT_CTRL) | |
3e366149 | 3414 | return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops); |
a26243b0 HV |
3415 | return -EINVAL; |
3416 | } | |
3417 | EXPORT_SYMBOL(v4l2_ctrl_subscribe_event); | |
3418 | ||
22fa4279 SN |
3419 | int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, |
3420 | struct v4l2_event_subscription *sub) | |
3421 | { | |
3422 | if (!sd->ctrl_handler) | |
3423 | return -EINVAL; | |
3424 | return v4l2_ctrl_subscribe_event(fh, sub); | |
3425 | } | |
3426 | EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event); | |
3427 | ||
a26243b0 HV |
3428 | unsigned int v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait) |
3429 | { | |
3430 | struct v4l2_fh *fh = file->private_data; | |
3431 | ||
3432 | if (v4l2_event_pending(fh)) | |
3433 | return POLLPRI; | |
3434 | poll_wait(file, &fh->wait, wait); | |
3435 | return 0; | |
3436 | } | |
3437 | EXPORT_SYMBOL(v4l2_ctrl_poll); |